381657232 has 30 divisors (see below), whose sum is σ = 812799974. Its totient is φ = 173479680.

The previous prime is 381657229. The next prime is 381657247. The reversal of 381657232 is 232756183.

It can be written as a sum of positive squares in only one way, i.e., 381655296 + 1936 = 19536^2 + 44^2 .

It is a junction number, because it is equal to n+sod(n) for n = 381657191 and 381657200.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 96633 + ... + 100504.

Almost surely, 2^381657232 is an apocalyptic number.

It is an amenable number.

381657232 is an abundant number, since it is smaller than the sum of its proper divisors (431142742).

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

381657232 is a wasteful number, since it uses less digits than its factorization.

381657232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197167 (or 197150 counting only the distinct ones).

The product of its digits is 60480, while the sum is 37.

The square root of 381657232 is about 19536.0495494867. The cubic root of 381657232 is about 725.3670639080.

The spelling of 381657232 in words is "three hundred eighty-one million, six hundred fifty-seven thousand, two hundred thirty-two".