380857028 has 12 divisors (see below), whose sum is σ = 666640380. Its totient is φ = 190388352.

The previous prime is 380857019. The next prime is 380857049. The reversal of 380857028 is 820758083.

It can be written as a sum of positive squares in 2 ways, for example, as 101566084 + 279290944 = 10078^2 + 16712^2 .

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24488 + ... + 36896.

It is an arithmetic number, because the mean of its divisors is an integer number (55553365).

Almost surely, 2^380857028 is an apocalyptic number.

It is an amenable number.

380857028 is a deficient number, since it is larger than the sum of its proper divisors (285783352).

380857028 is a wasteful number, since it uses less digits than its factorization.

380857028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20086 (or 20084 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 41.

The square root of 380857028 is about 19515.5586135780. The cubic root of 380857028 is about 724.8597607464.

The spelling of 380857028 in words is "three hundred eighty million, eight hundred fifty-seven thousand, twenty-eight".