78712700 has 72 divisors (see below), whose sum is σ = 187904640. Its totient is φ = 28382400.

The previous prime is 78712681. The next prime is 78712709. The reversal of 78712700 is 721787.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78712709) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 179081 + ... + 179519.

Almost surely, 2^78712700 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78712700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93952320).

78712700 is an abundant number, since it is smaller than the sum of its proper divisors (109191940).

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

78712700 is a wasteful number, since it uses less digits than its factorization.

78712700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627 (or 620 counting only the distinct ones).

The product of its (nonzero) digits is 5488, while the sum is 32.

The square root of 78712700 is about 8872.0178088189. The cubic root of 78712700 is about 428.5632596327.

The spelling of 78712700 in words is "seventy-eight million, seven hundred twelve thousand, seven hundred".