78903980 has 24 divisors (see below), whose sum is σ = 170178288. Its totient is φ = 30708288.

The previous prime is 78903977. The next prime is 78903989. The reversal of 78903980 is 8930987.

It is not an unprimeable number, because it can be changed into a prime (78903989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52574 + ... + 54053.

It is an arithmetic number, because the mean of its divisors is an integer number (7090762).

Almost surely, 2^78903980 is an apocalyptic number.

It is an amenable number.

78903980 is an abundant number, since it is smaller than the sum of its proper divisors (91274308).

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

78903980 is a wasteful number, since it uses less digits than its factorization.

78903980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106673 (or 106671 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 78903980 is about 8882.7912279868. The cubic root of 78903980 is about 428.9101298190.

The spelling of 78903980 in words is "seventy-eight million, nine hundred three thousand, nine hundred eighty".