78531008 has 14 divisors (see below), whose sum is σ = 155835096. Its totient is φ = 39265472.

The previous prime is 78530999. The next prime is 78531067. The reversal of 78531008 is 80013587.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

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 as a sum of consecutive naturals, namely, 613460 + ... + 613587.

Almost surely, 2^78531008 is an apocalyptic number.

It is an amenable number.

78531008 is a deficient number, since it is larger than the sum of its proper divisors (77304088).

78531008 is a wasteful number, since it uses less digits than its factorization.

78531008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1227059 (or 1227049 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 78531008 is about 8861.7722832400. The cubic root of 78531008 is about 428.2332556831.

The spelling of 78531008 in words is "seventy-eight million, five hundred thirty-one thousand, eight".