78712704 has 192 divisors, whose sum is σ = 266048640. Its totient is φ = 21869568.

The previous prime is 78712681. The next prime is 78712709. The reversal of 78712704 is 40721787.

It is a tau number, because it is divible by the number of its divisors (192).

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

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, 346639 + ... + 346865.

It is an arithmetic number, because the mean of its divisors is an integer number (1385670).

Almost surely, 2^78712704 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 78712704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133024320).

78712704 is an abundant number, since it is smaller than the sum of its proper divisors (187335936).

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

78712704 is a wasteful number, since it uses less digits than its factorization.

78712704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297 (or 282 counting only the distinct ones).

The product of its (nonzero) digits is 21952, while the sum is 36.

The square root of 78712704 is about 8872.0180342468. The cubic root of 78712704 is about 428.5632668922.

The spelling of 78712704 in words is "seventy-eight million, seven hundred twelve thousand, seven hundred four".