72240519 has 12 divisors (see below), whose sum is σ = 103806248. Its totient is φ = 44423040.

The previous prime is 72240517. The next prime is 72240529. The reversal of 72240519 is 91504227.

It is not a de Polignac number, because 72240519 - 2¹ = 72240517 is a prime.

It is a super-2 number, since 2×72240519² = 10437385170778722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72240517) 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 11 ways as a sum of consecutive naturals, for example, 52399 + ... + 53759.

Almost surely, 2^72240519 is an apocalyptic number.

72240519 is a deficient number, since it is larger than the sum of its proper divisors (31565729).

72240519 is an equidigital number, since it uses as much as digits as its factorization.

72240519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2738 (or 1377 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 72240519 is about 8499.4422758202. The cubic root of 72240519 is about 416.4794901863.

The spelling of 72240519 in words is "seventy-two million, two hundred forty thousand, five hundred nineteen".