78568980 has 48 divisors (see below), whose sum is σ = 251422080. Its totient is φ = 17958528.

The previous prime is 78568979. The next prime is 78568993. The reversal of 78568980 is 8986587.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93115 + ... + 93954.

It is an arithmetic number, because the mean of its divisors is an integer number (5237960).

Almost surely, 2^78568980 is an apocalyptic number.

78568980 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

78568980 is an abundant number, since it is smaller than the sum of its proper divisors (172853100).

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

78568980 is a wasteful number, since it uses less digits than its factorization.

78568980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187088 (or 187086 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 51.

The square root of 78568980 is about 8863.9144851471. The cubic root of 78568980 is about 428.3022655916.

It can be divided in two parts, 7856 and 8980, that added together give a triangular number (16836 = T₁₈₃).

The spelling of 78568980 in words is "seventy-eight million, five hundred sixty-eight thousand, nine hundred eighty".