40232172 has 72 divisors (see below), whose sum is σ = 100853760. Its totient is φ = 12467520.

The previous prime is 40232167. The next prime is 40232173. The reversal of 40232172 is 27123204.

It is not an unprimeable number, because it can be changed into a prime (40232173) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 509229 + ... + 509307.

Almost surely, 2^40232172 is an apocalyptic number.

It is an amenable number.

40232172 is an abundant number, since it is smaller than the sum of its proper divisors (60621588).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40232172 is a wasteful number, since it uses less digits than its factorization.

40232172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191 (or 152 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 40232172 is about 6342.8835713735. The cubic root of 40232172 is about 342.6555941419.

Adding to 40232172 its reverse (27123204), we get a palindrome (67355376).

It can be divided in two parts, 40232 and 172, that added together give a palindrome (40404).

The spelling of 40232172 in words is "forty million, two hundred thirty-two thousand, one hundred seventy-two".