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2550020 = 2251167173
BaseRepresentation
bin1001101110100100000100
311210112222012
421232210010
51123100040
6130353352
730450314
oct11564404
94715865
102550020
111491960
12a2b858
136b38b5
144a5444
15355865
hex26e904

2550020 has 48 divisors (see below), whose sum is σ = 5963328. Its totient is φ = 908160.

The previous prime is 2550019. The next prime is 2550059. The reversal of 2550020 is 200552.

It is a junction number, because it is equal to n+sod(n) for n = 2549977 and 2550004.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14654 + ... + 14826.

It is an arithmetic number, because the mean of its divisors is an integer number (124236).

22550020 is an apocalyptic number.

2550020 is a gapful number since it is divisible by the number (20) 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 2550020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2981664).

2550020 is an abundant number, since it is smaller than the sum of its proper divisors (3413308).

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

2550020 is a wasteful number, since it uses less digits than its factorization.

2550020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260 (or 258 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 14.

The square root of 2550020 is about 1596.8782044978. The cubic root of 2550020 is about 136.6200779795.

Adding to 2550020 its reverse (200552), we get a palindrome (2750572).

The spelling of 2550020 in words is "two million, five hundred fifty thousand, twenty".

Divisors: 1 2 4 5 10 11 20 22 44 55 67 110 134 173 220 268 335 346 670 692 737 865 1340 1474 1730 1903 2948 3460 3685 3806 7370 7612 9515 11591 14740 19030 23182 38060 46364 57955 115910 127501 231820 255002 510004 637505 1275010 2550020