72539474 has 8 divisors (see below), whose sum is σ = 124353408. Its totient is φ = 31088340.

The previous prime is 72539449. The next prime is 72539483. The reversal of 72539474 is 47493527.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2590682 + ... + 2590709.

It is an arithmetic number, because the mean of its divisors is an integer number (15544176).

Almost surely, 2^72539474 is an apocalyptic number.

72539474 is a deficient number, since it is larger than the sum of its proper divisors (51813934).

72539474 is a wasteful number, since it uses less digits than its factorization.

72539474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5181400.

The product of its digits is 211680, while the sum is 41.

The square root of 72539474 is about 8517.0108606248. The cubic root of 72539474 is about 417.0532091507.

The spelling of 72539474 in words is "seventy-two million, five hundred thirty-nine thousand, four hundred seventy-four".