678872392 has 32 divisors (see below), whose sum is σ = 1399226400. Its totient is φ = 306217600.

The previous prime is 678872387. The next prime is 678872399. The reversal of 678872392 is 293278876.

It is not an unprimeable number, because it can be changed into a prime (678872399) 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 7 ways as a sum of consecutive naturals, for example, 17917 + ... + 40972.

It is an arithmetic number, because the mean of its divisors is an integer number (43725825).

Almost surely, 2^678872392 is an apocalyptic number.

It is an amenable number.

678872392 is an abundant number, since it is smaller than the sum of its proper divisors (720354008).

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

678872392 is a wasteful number, since it uses less digits than its factorization.

678872392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59037 (or 59033 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 52.

The square root of 678872392 is about 26055.1797537457. The cubic root of 678872392 is about 878.8795968517.

The spelling of 678872392 in words is "six hundred seventy-eight million, eight hundred seventy-two thousand, three hundred ninety-two".