78683980 has 24 divisors (see below), whose sum is σ = 169080912. Its totient is φ = 30741312.

The previous prime is 78683963. The next prime is 78683987. The reversal of 78683980 is 8938687.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (78683987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44887 + ... + 46606.

It is an arithmetic number, because the mean of its divisors is an integer number (7045038).

Almost surely, 2^78683980 is an apocalyptic number.

It is an amenable number.

78683980 is an abundant number, since it is smaller than the sum of its proper divisors (90396932).

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

78683980 is a wasteful number, since it uses less digits than its factorization.

78683980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91545 (or 91543 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 49.

The square root of 78683980 is about 8870.3990891053. The cubic root of 78683980 is about 428.5111298234.

The spelling of 78683980 in words is "seventy-eight million, six hundred eighty-three thousand, nine hundred eighty".