72084424 has 16 divisors (see below), whose sum is σ = 139518720. Its totient is φ = 34879440.

The previous prime is 72084413. The next prime is 72084431. The reversal of 72084424 is 42448027.

It is a super-3 number, since 3×72084424³ (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145084 + ... + 145579.

It is an arithmetic number, because the mean of its divisors is an integer number (8719920).

Almost surely, 2^72084424 is an apocalyptic number.

It is an amenable number.

72084424 is a deficient number, since it is larger than the sum of its proper divisors (67434296).

72084424 is a wasteful number, since it uses less digits than its factorization.

72084424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290700 (or 290696 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 31.

The square root of 72084424 is about 8490.2546487134. The cubic root of 72084424 is about 416.1793020217.

The spelling of 72084424 in words is "seventy-two million, eighty-four thousand, four hundred twenty-four".