79320540 has 48 divisors (see below), whose sum is σ = 239184288. Its totient is φ = 19524864.

The previous prime is 79320529. The next prime is 79320587. The reversal of 79320540 is 4502397.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 79320498 and 79320507.

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, 50067 + ... + 51626.

It is an arithmetic number, because the mean of its divisors is an integer number (4983006).

Almost surely, 2^79320540 is an apocalyptic number.

It is an amenable number.

79320540 is an abundant number, since it is smaller than the sum of its proper divisors (159863748).

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

79320540 is a wasteful number, since it uses less digits than its factorization.

79320540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101718 (or 101716 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 79320540 is about 8906.2079472691. The cubic root of 79320540 is about 429.6635912162.

The spelling of 79320540 in words is "seventy-nine million, three hundred twenty thousand, five hundred forty".