331792540 has 12 divisors (see below), whose sum is σ = 696764376. Its totient is φ = 132717008.

The previous prime is 331792537. The next prime is 331792547. The reversal of 331792540 is 45297133.

It is a super-2 number, since 2×331792540² = 220172579199303200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 331792496 and 331792505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331792547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8294794 + ... + 8294833.

It is an arithmetic number, because the mean of its divisors is an integer number (58063698).

Almost surely, 2^331792540 is an apocalyptic number.

It is an amenable number.

331792540 is an abundant number, since it is smaller than the sum of its proper divisors (364971836).

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

331792540 is a wasteful number, since it uses less digits than its factorization.

331792540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16589636 (or 16589634 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 331792540 is about 18215.1733453185. The cubic root of 331792540 is about 692.2912976111.

The spelling of 331792540 in words is "three hundred thirty-one million, seven hundred ninety-two thousand, five hundred forty".