79343540 has 48 divisors (see below), whose sum is σ = 172368000. Its totient is φ = 30655872.

The previous prime is 79343533. The next prime is 79343587. The reversal of 79343540 is 4534397.

It is a self number, because there is not a number n which added to its sum of digits gives 79343540.

It is a congruent number.

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, 132161 + ... + 132759.

It is an arithmetic number, because the mean of its divisors is an integer number (3591000).

Almost surely, 2^79343540 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 79343540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86184000).

79343540 is an abundant number, since it is smaller than the sum of its proper divisors (93024460).

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

79343540 is a wasteful number, since it uses less digits than its factorization.

79343540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 824 (or 822 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 35.

The square root of 79343540 is about 8907.4990878473. The cubic root of 79343540 is about 429.7051160117.

The spelling of 79343540 in words is "seventy-nine million, three hundred forty-three thousand, five hundred forty".