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180421054 = 211311371931
BaseRepresentation
bin10101100000100…
…00000110111110
3110120111100011021
422300100012332
5332141433204
625523014354
74320360622
oct1260200676
9416440137
10180421054
1192930010
125050a3ba
132b4c0728
1419d67182
1510c8d154
hexac101be

180421054 has 32 divisors (see below), whose sum is σ = 307141632. Its totient is φ = 78744000.

The previous prime is 180421037. The next prime is 180421057. The reversal of 180421054 is 450124081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180421057) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92469 + ... + 94399.

It is an arithmetic number, because the mean of its divisors is an integer number (9598176).

Almost surely, 2180421054 is an apocalyptic number.

180421054 is a deficient number, since it is larger than the sum of its proper divisors (126720578).

180421054 is a wasteful number, since it uses less digits than its factorization.

180421054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2112.

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 180421054 is about 13432.0904553238. The cubic root of 180421054 is about 565.0615267009.

The spelling of 180421054 in words is "one hundred eighty million, four hundred twenty-one thousand, fifty-four".

Divisors: 1 2 11 22 31 62 137 274 341 682 1507 1931 3014 3862 4247 8494 21241 42482 46717 59861 93434 119722 264547 529094 658471 1316942 2910017 5820034 8200957 16401914 90210527 180421054