78372504 has 48 divisors (see below), whose sum is σ = 242583120. Its totient is φ = 22392000.

The previous prime is 78372493. The next prime is 78372521. The reversal of 78372504 is 40527387.

78372504 is a `hidden beast` number, since 7 + 83 + 72 + 504 = 666.

It is a super-2 number, since 2×78372504² = 12284498766460032, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77247 + ... + 78254.

It is an arithmetic number, because the mean of its divisors is an integer number (5053815).

Almost surely, 2^78372504 is an apocalyptic number.

It is an amenable number.

78372504 is an abundant number, since it is smaller than the sum of its proper divisors (164210616).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78372504 is a wasteful number, since it uses less digits than its factorization.

78372504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155520 (or 155513 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 78372504 is about 8852.8246339798. The cubic root of 78372504 is about 427.9449517229.

The spelling of 78372504 in words is "seventy-eight million, three hundred seventy-two thousand, five hundred four".