78810488 has 16 divisors (see below), whose sum is σ = 149127000. Its totient is φ = 39043296.

The previous prime is 78810467. The next prime is 78810491. The reversal of 78810488 is 88401887.

It is a super-2 number, since 2×78810488² = 12422186037596288, which contains 22 as substring.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

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, 44318 + ... + 46061.

Almost surely, 2^78810488 is an apocalyptic number.

It is an amenable number.

78810488 is a deficient number, since it is larger than the sum of its proper divisors (70316512).

78810488 is a wasteful number, since it uses less digits than its factorization.

78810488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90494 (or 90490 counting only the distinct ones).

The product of its (nonzero) digits is 114688, while the sum is 44.

The square root of 78810488 is about 8877.5271331605. The cubic root of 78810488 is about 428.7406600656.

The spelling of 78810488 in words is "seventy-eight million, eight hundred ten thousand, four hundred eighty-eight".