78900516 has 36 divisors (see below), whose sum is σ = 201316752. Its totient is φ = 26053104.

The previous prime is 78900499. The next prime is 78900529. The reversal of 78900516 is 61500987.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6390 + ... + 14093.

It is an arithmetic number, because the mean of its divisors is an integer number (5592132).

Almost surely, 2^78900516 is an apocalyptic number.

It is an amenable number.

78900516 is an abundant number, since it is smaller than the sum of its proper divisors (122416236).

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

78900516 is a wasteful number, since it uses less digits than its factorization.

78900516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20600 (or 20595 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 78900516 is about 8882.5962420905. The cubic root of 78900516 is about 428.9038531334.

The spelling of 78900516 in words is "seventy-eight million, nine hundred thousand, five hundred sixteen".