78511960 has 32 divisors (see below), whose sum is σ = 177953760. Its totient is φ = 31173376.

The previous prime is 78511957. The next prime is 78511991. The reversal of 78511960 is 6911587.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1684 + ... + 12643.

It is an arithmetic number, because the mean of its divisors is an integer number (5561055).

Almost surely, 2^78511960 is an apocalyptic number.

It is an amenable number.

78511960 is an abundant number, since it is smaller than the sum of its proper divisors (99441800).

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

78511960 is a wasteful number, since it uses less digits than its factorization.

78511960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14475 (or 14471 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 37.

The square root of 78511960 is about 8860.6974894756. The cubic root of 78511960 is about 428.1986296721.

The spelling of 78511960 in words is "seventy-eight million, five hundred eleven thousand, nine hundred sixty".