72071593 has 12 divisors (see below), whose sum is σ = 79604224. Its totient is φ = 65201400.

The previous prime is 72071557. The next prime is 72071599. The reversal of 72071593 is 39517027.

It is a de Polignac number, because none of the positive numbers 2^k-72071593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72071599) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25648 + ... + 28318.

Almost surely, 2^72071593 is an apocalyptic number.

It is an amenable number.

72071593 is a deficient number, since it is larger than the sum of its proper divisors (7532631).

72071593 is a wasteful number, since it uses less digits than its factorization.

72071593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2916 (or 2905 counting only the distinct ones).

The product of its (nonzero) digits is 13230, while the sum is 34.

The square root of 72071593 is about 8489.4989840390. The cubic root of 72071593 is about 416.1546073041.

The spelling of 72071593 in words is "seventy-two million, seventy-one thousand, five hundred ninety-three".