78790980 has 48 divisors (see below), whose sum is σ = 221062464. Its totient is φ = 20968320.

The previous prime is 78790979. The next prime is 78790981. The reversal of 78790980 is 8909787.

It is an interprime number because it is at equal distance from previous prime (78790979) and next prime (78790981).

It is not an unprimeable number, because it can be changed into a prime (78790981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38175 + ... + 40185.

It is an arithmetic number, because the mean of its divisors is an integer number (4605468).

Almost surely, 2^78790980 is an apocalyptic number.

It is an amenable number.

78790980 is an abundant number, since it is smaller than the sum of its proper divisors (142271484).

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

78790980 is a wasteful number, since it uses less digits than its factorization.

78790980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2676 (or 2674 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 48.

The square root of 78790980 is about 8876.4283357666. The cubic root of 78790980 is about 428.7052816822.

The spelling of 78790980 in words is "seventy-eight million, seven hundred ninety thousand, nine hundred eighty".