78872860 has 48 divisors (see below), whose sum is σ = 191328480. Its totient is φ = 26992640.

The previous prime is 78872839. The next prime is 78872861. The reversal of 78872860 is 6827887.

It is a self number, because there is not a number n which added to its sum of digits gives 78872860.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78872861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6805 + ... + 14284.

It is an arithmetic number, because the mean of its divisors is an integer number (3986010).

Almost surely, 2^78872860 is an apocalyptic number.

It is an amenable number.

78872860 is an abundant number, since it is smaller than the sum of its proper divisors (112455620).

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

78872860 is a wasteful number, since it uses less digits than its factorization.

78872860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21126 (or 21124 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 46.

The square root of 78872860 is about 8881.0393535892. The cubic root of 78872860 is about 428.8537345294.

The spelling of 78872860 in words is "seventy-eight million, eight hundred seventy-two thousand, eight hundred sixty".