40004232 has 16 divisors (see below), whose sum is σ = 100010640. Its totient is φ = 13334736.

The previous prime is 40004231. The next prime is 40004243. The reversal of 40004232 is 23240004.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (40004231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 833398 + ... + 833445.

It is an arithmetic number, because the mean of its divisors is an integer number (6250665).

Almost surely, 2^40004232 is an apocalyptic number.

It is an amenable number.

40004232 is an abundant number, since it is smaller than the sum of its proper divisors (60006408).

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

40004232 is a wasteful number, since it uses less digits than its factorization.

40004232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1666852 (or 1666848 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 40004232 is about 6324.8898804643. The cubic root of 40004232 is about 342.0072499404.

Adding to 40004232 its reverse (23240004), we get a palindrome (63244236).

The spelling of 40004232 in words is "forty million, four thousand, two hundred thirty-two".