40031572 has 24 divisors (see below), whose sum is σ = 80341184. Its totient is φ = 17096832.

The previous prime is 40031567. The next prime is 40031597. The reversal of 40031572 is 27513004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6268 + ... + 10924.

Almost surely, 2^40031572 is an apocalyptic number.

It is an amenable number.

40031572 is an abundant number, since it is smaller than the sum of its proper divisors (40309612).

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

40031572 is a wasteful number, since it uses less digits than its factorization.

40031572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4975 (or 4973 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 40031572 is about 6327.0508137678. The cubic root of 40031572 is about 342.0851446066.

Adding to 40031572 its reverse (27513004), we get a palindrome (67544576).

The spelling of 40031572 in words is "forty million, thirty-one thousand, five hundred seventy-two".