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380906916 = 2231310632297
BaseRepresentation
bin10110101101000…
…010110110100100
3222112202002001120
4112231002312210
51240003010131
6101444053540
712303440535
oct2655026644
9875662046
10380906916
11186015005
12a76942b0
1360bb7c10
143883468c
1523691496
hex16b42da4

380906916 has 48 divisors (see below), whose sum is σ = 958468224. Its totient is φ = 117040896.

The previous prime is 380906899. The next prime is 380906957. The reversal of 380906916 is 619609083.

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, 164680 + ... + 166976.

It is an arithmetic number, because the mean of its divisors is an integer number (19968088).

Almost surely, 2380906916 is an apocalyptic number.

It is an amenable number.

380906916 is an abundant number, since it is smaller than the sum of its proper divisors (577561308).

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

380906916 is a wasteful number, since it uses less digits than its factorization.

380906916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3380 (or 3378 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 380906916 is about 19516.8367313968. The cubic root of 380906916 is about 724.8914088648.

The spelling of 380906916 in words is "three hundred eighty million, nine hundred six thousand, nine hundred sixteen".

Divisors: 1 2 3 4 6 12 13 26 39 52 78 156 1063 2126 2297 3189 4252 4594 6378 6891 9188 12756 13782 13819 27564 27638 29861 41457 55276 59722 82914 89583 119444 165828 179166 358332 2441711 4883422 7325133 9766844 14650266 29300532 31742243 63484486 95226729 126968972 190453458 380906916