79240515 has 16 divisors (see below), whose sum is σ = 128314368. Its totient is φ = 41751776.

The previous prime is 79240501. The next prime is 79240517. The reversal of 79240515 is 51504297.

It is a cyclic number.

It is not a de Polignac number, because 79240515 - 2⁷ = 79240387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (79240517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30579 + ... + 33068.

It is an arithmetic number, because the mean of its divisors is an integer number (8019648).

Almost surely, 2^79240515 is an apocalyptic number.

79240515 is a deficient number, since it is larger than the sum of its proper divisors (49073853).

79240515 is a wasteful number, since it uses less digits than its factorization.

79240515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63738.

The product of its (nonzero) digits is 12600, while the sum is 33.

The square root of 79240515 is about 8901.7141607670. The cubic root of 79240515 is about 429.5190494265.

The spelling of 79240515 in words is "seventy-nine million, two hundred forty thousand, five hundred fifteen".