380427886728 has 96 divisors (see below), whose sum is σ = 1096471335960. Its totient is φ = 118744012800.

The previous prime is 380427886661. The next prime is 380427886759. The reversal of 380427886728 is 827688724083.

380427886728 is a `hidden beast` number, since 380 + 42 + 78 + 86 + 72 + 8 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 372248854884 + 8179031844 = 610122^2 + 90438^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 547723 + ... + 1029978.

Almost surely, 2^380427886728 is an apocalyptic number.

It is an amenable number.

380427886728 is an abundant number, since it is smaller than the sum of its proper divisors (716043449232).

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

380427886728 is a wasteful number, since it uses less digits than its factorization.

380427886728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1577927 (or 1577920 counting only the distinct ones).

The product of its (nonzero) digits is 57802752, while the sum is 63.

The spelling of 380427886728 in words is "three hundred eighty billion, four hundred twenty-seven million, eight hundred eighty-six thousand, seven hundred twenty-eight".