72232210 has 8 divisors (see below), whose sum is σ = 130017996. Its totient is φ = 28892880.

The previous prime is 72232187. The next prime is 72232247. The reversal of 72232210 is 1223227.

It can be written as a sum of positive squares in 2 ways, for example, as 64464841 + 7767369 = 8029^2 + 2787^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×72232210² = 10434984322968200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3611601 + ... + 3611620.

Almost surely, 2^72232210 is an apocalyptic number.

72232210 is a deficient number, since it is larger than the sum of its proper divisors (57785786).

72232210 is a wasteful number, since it uses less digits than its factorization.

72232210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7223228.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 72232210 is about 8498.9534649861. The cubic root of 72232210 is about 416.4635219512.

Adding to 72232210 its reverse (1223227), we get a palindrome (73455437).

The spelling of 72232210 in words is "seventy-two million, two hundred thirty-two thousand, two hundred ten".