79618740 has 96 divisors (see below), whose sum is σ = 236490240. Its totient is φ = 19958400.

The previous prime is 79618739. The next prime is 79618751. The reversal of 79618740 is 4781697.

It is a junction number, because it is equal to n+sod(n) for n = 79618692 and 79618701.

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, 240375 + ... + 240705.

It is an arithmetic number, because the mean of its divisors is an integer number (2463440).

Almost surely, 2^79618740 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 79618740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118245120).

79618740 is an abundant number, since it is smaller than the sum of its proper divisors (156871500).

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

79618740 is a wasteful number, since it uses less digits than its factorization.

79618740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573 (or 571 counting only the distinct ones).

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

The square root of 79618740 is about 8922.9333741769. The cubic root of 79618740 is about 430.2013479249.

The spelling of 79618740 in words is "seventy-nine million, six hundred eighteen thousand, seven hundred forty".