72944847 has 8 divisors (see below), whose sum is σ = 108066480. Its totient is φ = 48629880.

The previous prime is 72944821. The next prime is 72944881. The reversal of 72944847 is 74844927.

It is not a de Polignac number, because 72944847 - 2⁶ = 72944783 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72944897) 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 7 ways as a sum of consecutive naturals, for example, 1350804 + ... + 1350857.

It is an arithmetic number, because the mean of its divisors is an integer number (13508310).

Almost surely, 2^72944847 is an apocalyptic number.

72944847 is a deficient number, since it is larger than the sum of its proper divisors (35121633).

72944847 is a wasteful number, since it uses less digits than its factorization.

72944847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2701670 (or 2701664 counting only the distinct ones).

The product of its digits is 451584, while the sum is 45.

The square root of 72944847 is about 8540.7755502647. The cubic root of 72944847 is about 417.8286405655.

The spelling of 72944847 in words is "seventy-two million, nine hundred forty-four thousand, eight hundred forty-seven".