79780392 has 96 divisors (see below), whose sum is σ = 235404000. Its totient is φ = 24312960.

The previous prime is 79780387. The next prime is 79780417. The reversal of 79780392 is 29308797.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38667 + ... + 40677.

It is an arithmetic number, because the mean of its divisors is an integer number (2452125).

Almost surely, 2^79780392 is an apocalyptic number.

79780392 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79780392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117702000).

79780392 is an abundant number, since it is smaller than the sum of its proper divisors (155623608).

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

79780392 is a wasteful number, since it uses less digits than its factorization.

79780392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2071 (or 2064 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 45.

The square root of 79780392 is about 8931.9870129776. The cubic root of 79780392 is about 430.4923007684.

The spelling of 79780392 in words is "seventy-nine million, seven hundred eighty thousand, three hundred ninety-two".