531872392 has 8 divisors (see below), whose sum is σ = 997260750. Its totient is φ = 265936192.

The previous prime is 531872347. The next prime is 531872417. The reversal of 531872392 is 293278135.

It can be written as a sum of positive squares in only one way, i.e., 527437156 + 4435236 = 22966^2 + 2106^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33242017 + ... + 33242032.

Almost surely, 2^531872392 is an apocalyptic number.

It is an amenable number.

531872392 is a deficient number, since it is larger than the sum of its proper divisors (465388358).

531872392 is a wasteful number, since it uses less digits than its factorization.

531872392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66484055 (or 66484051 counting only the distinct ones).

The product of its digits is 90720, while the sum is 40.

The square root of 531872392 is about 23062.3587692153. The cubic root of 531872392 is about 810.2191105657.

The spelling of 531872392 in words is "five hundred thirty-one million, eight hundred seventy-two thousand, three hundred ninety-two".