72993519 has 12 divisors (see below), whose sum is σ = 106084056. Its totient is φ = 48362832.

The previous prime is 72993517. The next prime is 72993523. The reversal of 72993519 is 91539927.

It is a happy number.

72993519 is a `hidden beast` number, since 7 + 299 + 351 + 9 = 666.

It is not a de Polignac number, because 72993519 - 2¹ = 72993517 is a prime.

It is a super-2 number, since 2×72993519² = 10656107632006722, which contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72993511) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23412 + ... + 26345.

It is an arithmetic number, because the mean of its divisors is an integer number (8840338).

Almost surely, 2^72993519 is an apocalyptic number.

72993519 is a deficient number, since it is larger than the sum of its proper divisors (33090537).

72993519 is a wasteful number, since it uses less digits than its factorization.

72993519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49926 (or 49923 counting only the distinct ones).

The product of its digits is 153090, while the sum is 45.

The square root of 72993519 is about 8543.6244650617. The cubic root of 72993519 is about 417.9215510998.

The spelling of 72993519 in words is "seventy-two million, nine hundred ninety-three thousand, five hundred nineteen".