78745704 has 64 divisors (see below), whose sum is σ = 207152640. Its totient is φ = 24910080.

The previous prime is 78745691. The next prime is 78745729. The reversal of 78745704 is 40754787.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38434 + ... + 40430.

It is an arithmetic number, because the mean of its divisors is an integer number (3236760).

Almost surely, 2^78745704 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 78745704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103576320).

78745704 is an abundant number, since it is smaller than the sum of its proper divisors (128406936).

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

78745704 is a wasteful number, since it uses less digits than its factorization.

78745704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2090 (or 2086 counting only the distinct ones).

The product of its (nonzero) digits is 219520, while the sum is 42.

The square root of 78745704 is about 8873.8776191696. The cubic root of 78745704 is about 428.6231496944.

The spelling of 78745704 in words is "seventy-eight million, seven hundred forty-five thousand, seven hundred four".