72947572 has 24 divisors (see below), whose sum is σ = 133910784. Its totient is φ = 34729632.

The previous prime is 72947551. The next prime is 72947639. The reversal of 72947572 is 27574927.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 1713 + ... + 12199.

It is an arithmetic number, because the mean of its divisors is an integer number (5579616).

Almost surely, 2^72947572 is an apocalyptic number.

It is an amenable number.

72947572 is a deficient number, since it is larger than the sum of its proper divisors (60963212).

72947572 is a wasteful number, since it uses less digits than its factorization.

72947572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10575 (or 10573 counting only the distinct ones).

The product of its digits is 246960, while the sum is 43.

The square root of 72947572 is about 8540.9350776130. The cubic root of 72947572 is about 417.8338434410.

The spelling of 72947572 in words is "seventy-two million, nine hundred forty-seven thousand, five hundred seventy-two".