78787484 has 6 divisors (see below), whose sum is σ = 137878104. Its totient is φ = 39393740.

The previous prime is 78787477. The next prime is 78787529. The reversal of 78787484 is 48478787.

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 as a sum of consecutive naturals, namely, 9848432 + ... + 9848439.

It is an arithmetic number, because the mean of its divisors is an integer number (22979684).

Almost surely, 2^78787484 is an apocalyptic number.

It is an amenable number.

78787484 is a deficient number, since it is larger than the sum of its proper divisors (59090620).

78787484 is a wasteful number, since it uses less digits than its factorization.

78787484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19696875 (or 19696873 counting only the distinct ones).

The product of its digits is 2809856, while the sum is 53.

The square root of 78787484 is about 8876.2314075288. The cubic root of 78787484 is about 428.6989409571.

The spelling of 78787484 in words is "seventy-eight million, seven hundred eighty-seven thousand, four hundred eighty-four".