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380906116 = 22738914657
BaseRepresentation
bin10110101101000…
…010101010000100
3222112202000221221
4112231002222010
51240002443431
6101444050124
712303435313
oct2655025204
9875660857
10380906116
11186014448
12a7693944
1360bb7746
143883427a
1523691111
hex16b42a84

380906116 has 24 divisors (see below), whose sum is σ = 683355960. Its totient is φ = 185720832.

The previous prime is 380906089. The next prime is 380906117. The reversal of 380906116 is 611609083.

It can be written as a sum of positive squares in 4 ways, for example, as 128731716 + 252174400 = 11346^2 + 15880^2 .

It is not an unprimeable number, because it can be changed into a prime (380906117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18660 + ... + 33316.

It is an arithmetic number, because the mean of its divisors is an integer number (28473165).

Almost surely, 2380906116 is an apocalyptic number.

It is an amenable number.

380906116 is a deficient number, since it is larger than the sum of its proper divisors (302449844).

380906116 is a wasteful number, since it uses less digits than its factorization.

380906116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14823 (or 14821 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 380906116 is about 19516.8162362615. The cubic root of 380906116 is about 724.8909013798.

The spelling of 380906116 in words is "three hundred eighty million, nine hundred six thousand, one hundred sixteen".

Divisors: 1 2 4 73 89 146 178 292 356 6497 12994 14657 25988 29314 58628 1069961 1304473 2139922 2608946 4279844 5217892 95226529 190453058 380906116