78499536 has 40 divisors (see below), whose sum is σ = 203156640. Its totient is φ = 26119296.

The previous prime is 78499501. The next prime is 78499537. The reversal of 78499536 is 63599487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78499537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34366 + ... + 36578.

It is an arithmetic number, because the mean of its divisors is an integer number (5078916).

Almost surely, 2^78499536 is an apocalyptic number.

It is an amenable number.

78499536 is an abundant number, since it is smaller than the sum of its proper divisors (124657104).

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

78499536 is a wasteful number, since it uses less digits than its factorization.

78499536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2963 (or 2957 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 51.

The square root of 78499536 is about 8859.9963882611. The cubic root of 78499536 is about 428.1760419440.

The spelling of 78499536 in words is "seventy-eight million, four hundred ninety-nine thousand, five hundred thirty-six".