72024643 has 4 divisors (see below), whose sum is σ = 72048640. Its totient is φ = 72000648.

The previous prime is 72024587. The next prime is 72024671. The reversal of 72024643 is 34642027.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72024643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72024143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6723 + ... + 13756.

It is an arithmetic number, because the mean of its divisors is an integer number (18012160).

Almost surely, 2^72024643 is an apocalyptic number.

72024643 is a deficient number, since it is larger than the sum of its proper divisors (23997).

72024643 is a wasteful number, since it uses less digits than its factorization.

72024643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23996.

The product of its (nonzero) digits is 8064, while the sum is 28.

The square root of 72024643 is about 8486.7333527100. The cubic root of 72024643 is about 416.0642217017.

The spelling of 72024643 in words is "seventy-two million, twenty-four thousand, six hundred forty-three".