78536292 has 48 divisors (see below), whose sum is σ = 191170560. Its totient is φ = 25062912.

The previous prime is 78536239. The next prime is 78536309. The reversal of 78536292 is 29263587.

It is a super-2 number, since 2×78536292² = 12335898322218528, which contains 22 as substring.

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, 43308 + ... + 45084.

It is an arithmetic number, because the mean of its divisors is an integer number (3982720).

Almost surely, 2^78536292 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 78536292, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95585280).

78536292 is an abundant number, since it is smaller than the sum of its proper divisors (112634268).

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

78536292 is a wasteful number, since it uses less digits than its factorization.

78536292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1940 (or 1938 counting only the distinct ones).

The product of its digits is 181440, while the sum is 42.

The square root of 78536292 is about 8862.0704127196. The cubic root of 78536292 is about 428.2428601007.

The spelling of 78536292 in words is "seventy-eight million, five hundred thirty-six thousand, two hundred ninety-two".