72232570 has 24 divisors (see below), whose sum is σ = 133298172. Its totient is φ = 28181760.

The previous prime is 72232553. The next prime is 72232577. The reversal of 72232570 is 7523227.

It can be written as a sum of positive squares in 6 ways, for example, as 2024929 + 70207641 = 1423^2 + 8379^2 .

It is not an unprimeable number, because it can be changed into a prime (72232577) 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, 14662 + ... + 18958.

Almost surely, 2^72232570 is an apocalyptic number.

72232570 is a deficient number, since it is larger than the sum of its proper divisors (61065602).

72232570 is a wasteful number, since it uses less digits than its factorization.

72232570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4386 (or 4345 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 28.

The square root of 72232570 is about 8498.9746440380. The cubic root of 72232570 is about 416.4642138245.

Adding to 72232570 its reverse (7523227), we get a palindrome (79755797).

The spelling of 72232570 in words is "seventy-two million, two hundred thirty-two thousand, five hundred seventy".