931693828 has 24 divisors (see below), whose sum is σ = 1763574680. Its totient is φ = 428129280.

The previous prime is 931693811. The next prime is 931693849. The reversal of 931693828 is 828396139.

It can be written as a sum of positive squares in 4 ways, for example, as 459587844 + 472105984 = 21438^2 + 21728^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27213 + ... + 51028.

Almost surely, 2^931693828 is an apocalyptic number.

It is an amenable number.

931693828 is a deficient number, since it is larger than the sum of its proper divisors (831880852).

931693828 is a wasteful number, since it uses less digits than its factorization.

931693828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78487 (or 78485 counting only the distinct ones).

The product of its digits is 559872, while the sum is 49.

The square root of 931693828 is about 30523.6601343941. The cubic root of 931693828 is about 976.6922452244.

The spelling of 931693828 in words is "nine hundred thirty-one million, six hundred ninety-three thousand, eight hundred twenty-eight".