79816740 has 48 divisors (see below), whose sum is σ = 226560768. Its totient is φ = 20991744.

The previous prime is 79816727. The next prime is 79816769. The reversal of 79816740 is 4761897.

It is a junction number, because it is equal to n+sod(n) for n = 79816692 and 79816701.

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, 4732 + ... + 13491.

It is an arithmetic number, because the mean of its divisors is an integer number (4720016).

Almost surely, 2^79816740 is an apocalyptic number.

It is an amenable number.

79816740 is an abundant number, since it is smaller than the sum of its proper divisors (146744028).

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

79816740 is a wasteful number, since it uses less digits than its factorization.

79816740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18308 (or 18306 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 42.

The square root of 79816740 is about 8934.0214909077. The cubic root of 79816740 is about 430.5576683690.

The spelling of 79816740 in words is "seventy-nine million, eight hundred sixteen thousand, seven hundred forty".