78490792 has 16 divisors (see below), whose sum is σ = 148023540. Its totient is φ = 39017856.

The previous prime is 78490777. The next prime is 78490793. The reversal of 78490792 is 29709487.

It can be written as a sum of positive squares in 2 ways, for example, as 70459236 + 8031556 = 8394^2 + 2834^2 .

It is not an unprimeable number, because it can be changed into a prime (78490793) 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 3 ways as a sum of consecutive naturals, for example, 26973 + ... + 29740.

Almost surely, 2^78490792 is an apocalyptic number.

It is an amenable number.

78490792 is a deficient number, since it is larger than the sum of its proper divisors (69532748).

78490792 is a wasteful number, since it uses less digits than its factorization.

78490792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56892 (or 56888 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 46.

The square root of 78490792 is about 8859.5029205932. The cubic root of 78490792 is about 428.1601432923.

The spelling of 78490792 in words is "seventy-eight million, four hundred ninety thousand, seven hundred ninety-two".