72204747 has 4 divisors (see below), whose sum is σ = 96273000. Its totient is φ = 48136496.

The previous prime is 72204733. The next prime is 72204749. The reversal of 72204747 is 74740227.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 72204747 - 2⁶ = 72204683 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72204749) 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 3 ways as a sum of consecutive naturals, for example, 12034122 + ... + 12034127.

It is an arithmetic number, because the mean of its divisors is an integer number (24068250).

Almost surely, 2^72204747 is an apocalyptic number.

72204747 is a deficient number, since it is larger than the sum of its proper divisors (24068253).

72204747 is a wasteful number, since it uses less digits than its factorization.

72204747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24068252.

The product of its (nonzero) digits is 21952, while the sum is 33.

The square root of 72204747 is about 8497.3376418735. The cubic root of 72204747 is about 416.4107348473.

The spelling of 72204747 in words is "seventy-two million, two hundred four thousand, seven hundred forty-seven".