381652992 has 416 divisors, whose sum is σ = 1415404800. Its totient is φ = 99090432.

The previous prime is 381652897. The next prime is 381653017. The reversal of 381652992 is 299256183.

381652992 is a `hidden beast` number, since 38 + 1 + 6 + 529 + 92 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13160434 + ... + 13160462.

Almost surely, 2^381652992 is an apocalyptic number.

381652992 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 381652992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (707702400).

381652992 is an abundant number, since it is smaller than the sum of its proper divisors (1033751808).

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

381652992 is a wasteful number, since it uses less digits than its factorization.

381652992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86 (or 58 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 381652992 is about 19535.9410318520. The cubic root of 381652992 is about 725.3643777562.

The spelling of 381652992 in words is "three hundred eighty-one million, six hundred fifty-two thousand, nine hundred ninety-two".