72868015 has 24 divisors (see below), whose sum is σ = 98383824. Its totient is φ = 51744000.

The previous prime is 72868013. The next prime is 72868027. The reversal of 72868015 is 51086827.

It is not a de Polignac number, because 72868015 - 2¹ = 72868013 is a prime.

It is a super-2 number, since 2×72868015² = 10619495220080450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72868013) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24615 + ... + 27415.

It is an arithmetic number, because the mean of its divisors is an integer number (4099326).

Almost surely, 2^72868015 is an apocalyptic number.

72868015 is a deficient number, since it is larger than the sum of its proper divisors (25515809).

72868015 is a wasteful number, since it uses less digits than its factorization.

72868015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2871 (or 2860 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 37.

The square root of 72868015 is about 8536.2764130504. The cubic root of 72868015 is about 417.6818909360.

The spelling of 72868015 in words is "seventy-two million, eight hundred sixty-eight thousand, fifteen".