78737904 has 90 divisors (see below), whose sum is σ = 256356360. Its totient is φ = 22494528.

The previous prime is 78737849. The next prime is 78737909. The reversal of 78737904 is 40973787.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 78737904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78737909) 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 17 ways as a sum of consecutive naturals, for example, 1477 + ... + 12635.

It is an arithmetic number, because the mean of its divisors is an integer number (2848404).

Almost surely, 2^78737904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78737904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128178180).

78737904 is an abundant number, since it is smaller than the sum of its proper divisors (177618456).

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

78737904 is a wasteful number, since it uses less digits than its factorization.

78737904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11187 (or 11171 counting only the distinct ones).

The product of its (nonzero) digits is 296352, while the sum is 45.

The square root of 78737904 is about 8873.4381160856. The cubic root of 78737904 is about 428.6089970876.

The spelling of 78737904 in words is "seventy-eight million, seven hundred thirty-seven thousand, nine hundred four".