72493515 has 16 divisors (see below), whose sum is σ = 128877600. Its totient is φ = 38663136.

The previous prime is 72493513. The next prime is 72493537. The reversal of 72493515 is 51539427.

It is not a de Polignac number, because 72493515 - 2¹ = 72493513 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72493515.

It is not an unprimeable number, because it can be changed into a prime (72493513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 268360 + ... + 268629.

It is an arithmetic number, because the mean of its divisors is an integer number (8054850).

Almost surely, 2^72493515 is an apocalyptic number.

72493515 is a deficient number, since it is larger than the sum of its proper divisors (56384085).

72493515 is a wasteful number, since it uses less digits than its factorization.

72493515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537003 (or 536997 counting only the distinct ones).

The product of its digits is 37800, while the sum is 36.

The square root of 72493515 is about 8514.3123621347. The cubic root of 72493515 is about 416.9651127586.

The spelling of 72493515 in words is "seventy-two million, four hundred ninety-three thousand, five hundred fifteen".