78452980 has 48 divisors (see below), whose sum is σ = 168892416. Its totient is φ = 30602880.

The previous prime is 78452963. The next prime is 78452993. The reversal of 78452980 is 8925487.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 169950 + ... + 170410.

It is an arithmetic number, because the mean of its divisors is an integer number (3518592).

Almost surely, 2^78452980 is an apocalyptic number.

It is an amenable number.

78452980 is an abundant number, since it is smaller than the sum of its proper divisors (90439436).

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

78452980 is a wasteful number, since it uses less digits than its factorization.

78452980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664 (or 662 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 43.

The square root of 78452980 is about 8857.3686837570. The cubic root of 78452980 is about 428.0913785734.

The spelling of 78452980 in words is "seventy-eight million, four hundred fifty-two thousand, nine hundred eighty".