381632756 has 12 divisors (see below), whose sum is σ = 684146820. Its totient is φ = 186162240.

The previous prime is 381632747. The next prime is 381632789. The reversal of 381632756 is 657236183.

It can be written as a sum of positive squares in 2 ways, for example, as 150896656 + 230736100 = 12284^2 + 15190^2 .

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a congruent number.

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, 1163351 + ... + 1163678.

It is an arithmetic number, because the mean of its divisors is an integer number (57012235).

Almost surely, 2^381632756 is an apocalyptic number.

It is an amenable number.

381632756 is a deficient number, since it is larger than the sum of its proper divisors (302514064).

381632756 is a wasteful number, since it uses less digits than its factorization.

381632756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2327074 (or 2327072 counting only the distinct ones).

The product of its digits is 181440, while the sum is 41.

The square root of 381632756 is about 19535.4231077804. The cubic root of 381632756 is about 725.3515574428.

The spelling of 381632756 in words is "three hundred eighty-one million, six hundred thirty-two thousand, seven hundred fifty-six".