78746980 has 24 divisors (see below), whose sum is σ = 178089912. Its totient is φ = 29075712.

The previous prime is 78746959. The next prime is 78747047. The reversal of 78746980 is 8964787.

It can be written as a sum of positive squares in 4 ways, for example, as 34596 + 78712384 = 186^2 + 8872^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151177 + ... + 151696.

It is an arithmetic number, because the mean of its divisors is an integer number (7420413).

Almost surely, 2^78746980 is an apocalyptic number.

It is an amenable number.

78746980 is an abundant number, since it is smaller than the sum of its proper divisors (99342932).

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

78746980 is a wasteful number, since it uses less digits than its factorization.

78746980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302895 (or 302893 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 49.

The square root of 78746980 is about 8873.9495152948. The cubic root of 78746980 is about 428.6254648268.

The spelling of 78746980 in words is "seventy-eight million, seven hundred forty-six thousand, nine hundred eighty".