79243380 has 96 divisors (see below), whose sum is σ = 247927680. Its totient is φ = 21012480.

The previous prime is 79243369. The next prime is 79243421. The reversal of 79243380 is 8334297.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 138495 + ... + 139065.

It is an arithmetic number, because the mean of its divisors is an integer number (2582580).

Almost surely, 2^79243380 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 79243380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123963840).

79243380 is an abundant number, since it is smaller than the sum of its proper divisors (168684300).

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

79243380 is a wasteful number, since it uses less digits than its factorization.

79243380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 846 (or 838 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 79243380 is about 8901.8750833743. The cubic root of 79243380 is about 429.5242258915.

The spelling of 79243380 in words is "seventy-nine million, two hundred forty-three thousand, three hundred eighty".