79874340 has 96 divisors (see below), whose sum is σ = 275278080. Its totient is φ = 16851456.

The previous prime is 79874329. The next prime is 79874341. The reversal of 79874340 is 4347897.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 79874292 and 79874301.

It is not an unprimeable number, because it can be changed into a prime (79874341) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1855 + ... + 12774.

It is an arithmetic number, because the mean of its divisors is an integer number (2867480).

Almost surely, 2^79874340 is an apocalyptic number.

79874340 is a gapful number since it is divisible by the number (70) 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 79874340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137639040).

79874340 is an abundant number, since it is smaller than the sum of its proper divisors (195403740).

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

79874340 is a wasteful number, since it uses less digits than its factorization.

79874340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14661 (or 14659 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 42.

The square root of 79874340 is about 8937.2445418037. The cubic root of 79874340 is about 430.6612145608.

The spelling of 79874340 in words is "seventy-nine million, eight hundred seventy-four thousand, three hundred forty".