78488836 has 12 divisors (see below), whose sum is σ = 137659228. Its totient is φ = 39157632.

The previous prime is 78488827. The next prime is 78488863. The reversal of 78488836 is 63888487.

It can be written as a sum of positive squares in 2 ways, for example, as 26071236 + 52417600 = 5106^2 + 7240^2 .

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 3 ways as a sum of consecutive naturals, for example, 19641 + ... + 23296.

Almost surely, 2^78488836 is an apocalyptic number.

It is an amenable number.

78488836 is a deficient number, since it is larger than the sum of its proper divisors (59170392).

78488836 is a wasteful number, since it uses less digits than its factorization.

78488836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43398 (or 43396 counting only the distinct ones).

The product of its digits is 2064384, while the sum is 52.

The square root of 78488836 is about 8859.3925299650. The cubic root of 78488836 is about 428.1565866620.

The spelling of 78488836 in words is "seventy-eight million, four hundred eighty-eight thousand, eight hundred thirty-six".