78858372 has 24 divisors (see below), whose sum is σ = 184212000. Its totient is φ = 26256256.

The previous prime is 78858371. The next prime is 78858407. The reversal of 78858372 is 27385887.

It is not an unprimeable number, because it can be changed into a prime (78858371) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9004 + ... + 15452.

It is an arithmetic number, because the mean of its divisors is an integer number (7675500).

Almost surely, 2^78858372 is an apocalyptic number.

It is an amenable number.

78858372 is an abundant number, since it is smaller than the sum of its proper divisors (105353628).

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

78858372 is a wasteful number, since it uses less digits than its factorization.

78858372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7475 (or 7473 counting only the distinct ones).

The product of its digits is 752640, while the sum is 48.

The square root of 78858372 is about 8880.2236458324. The cubic root of 78858372 is about 428.8274744894.

The spelling of 78858372 in words is "seventy-eight million, eight hundred fifty-eight thousand, three hundred seventy-two".