78535044 has 81 divisors (see below), whose sum is σ = 232030071. Its totient is φ = 22332240.

The previous prime is 78535033. The next prime is 78535063. The reversal of 78535044 is 44053587.

The square root of 78535044 is 8862.

It is a perfect power (a square), and thus also a powerful number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 372099 + ... + 372309.

Almost surely, 2^78535044 is an apocalyptic number.

78535044 is the 8862-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78535044

78535044 is an abundant number, since it is smaller than the sum of its proper divisors (153495027).

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

78535044 is a wasteful number, since it uses less digits than its factorization.

78535044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446 (or 223 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 36.

The cubic root of 78535044 is about 428.2405917230.

Multiplying 78535044 by its sum of digits (36), we get a square (2827261584 = 53172²).

78535044 divided by its sum of digits (36) gives a square (2181529 = 1477²).

The spelling of 78535044 in words is "seventy-eight million, five hundred thirty-five thousand, forty-four".