72028715 has 16 divisors (see below), whose sum is σ = 99256320. Its totient is φ = 49626720.

The previous prime is 72028703. The next prime is 72028727. The reversal of 72028715 is 51782027.

It is an interprime number because it is at equal distance from previous prime (72028703) and next prime (72028727).

It is not a de Polignac number, because 72028715 - 2⁸ = 72028459 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33419 + ... + 35508.

It is an arithmetic number, because the mean of its divisors is an integer number (6203520).

Almost surely, 2^72028715 is an apocalyptic number.

72028715 is a deficient number, since it is larger than the sum of its proper divisors (27227605).

72028715 is a wasteful number, since it uses less digits than its factorization.

72028715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68962.

The product of its (nonzero) digits is 7840, while the sum is 32.

The square root of 72028715 is about 8486.9732531686. The cubic root of 72028715 is about 416.0720624514.

The spelling of 72028715 in words is "seventy-two million, twenty-eight thousand, seven hundred fifteen".