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180080000 = 27542251
BaseRepresentation
bin10101011101111…
…00110110000000
3110112212000022122
422232330312000
5332100030000
625511423412
74314440402
oct1256746600
9415760278
10180080000
1192717851
1250384b68
132b401419
1419cb8b72
1510c22085
hexabbcd80

180080000 has 80 divisors (see below), whose sum is σ = 448497060. Its totient is φ = 72000000.

The previous prime is 180079973. The next prime is 180080009. The reversal of 180080000 is 80081.

It is a happy number.

180080000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a hoax number, since the sum of its digits (17) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180080009) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 78875 + ... + 81125.

Almost surely, 2180080000 is an apocalyptic number.

180080000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 180080000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (224248530).

180080000 is an abundant number, since it is smaller than the sum of its proper divisors (268417060).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

180080000 is an frugal number, since it uses more digits than its factorization.

180080000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2285 (or 2258 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 180080000 is about 13419.3889577730. The cubic root of 180080000 is about 564.7052525864.

It can be divided in two parts, 1800 and 80000, that multiplied together give a square (144000000 = 120002).

The spelling of 180080000 in words is "one hundred eighty million, eighty thousand".

Divisors: 1 2 4 5 8 10 16 20 25 32 40 50 64 80 100 125 128 160 200 250 320 400 500 625 640 800 1000 1250 1600 2000 2251 2500 3200 4000 4502 5000 8000 9004 10000 11255 16000 18008 20000 22510 36016 40000 45020 56275 72032 80000 90040 112550 144064 180080 225100 281375 288128 360160 450200 562750 720320 900400 1125500 1406875 1440640 1800800 2251000 2813750 3601600 4502000 5627500 7203200 9004000 11255000 18008000 22510000 36016000 45020000 90040000 180080000