72534393 has 32 divisors (see below), whose sum is σ = 116881920. Its totient is φ = 44271360.

The previous prime is 72534391. The next prime is 72534409. The reversal of 72534393 is 39343527.

It is not a de Polignac number, because 72534393 - 2¹ = 72534391 is a prime.

It is a super-2 number, since 2×72534393² = 10522476335756898, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (72534391) 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 31 ways as a sum of consecutive naturals, for example, 14848 + ... + 19118.

It is an arithmetic number, because the mean of its divisors is an integer number (3652560).

Almost surely, 2^72534393 is an apocalyptic number.

It is an amenable number.

72534393 is a deficient number, since it is larger than the sum of its proper divisors (44347527).

72534393 is a wasteful number, since it uses less digits than its factorization.

72534393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4334 (or 4328 counting only the distinct ones).

The product of its digits is 68040, while the sum is 36.

The square root of 72534393 is about 8516.7125700002. The cubic root of 72534393 is about 417.0434714786.

It can be divided in two parts, 72534 and 393, that added together give a palindrome (72927).

The spelling of 72534393 in words is "seventy-two million, five hundred thirty-four thousand, three hundred ninety-three".