40023232 has 28 divisors (see below), whose sum is σ = 81987136. Its totient is φ = 19365120.

The previous prime is 40023229. The next prime is 40023311. The reversal of 40023232 is 23232004.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8103 + ... + 12070.

It is an arithmetic number, because the mean of its divisors is an integer number (2928112).

Almost surely, 2^40023232 is an apocalyptic number.

It is an amenable number.

40023232 is an abundant number, since it is smaller than the sum of its proper divisors (41963904).

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

40023232 is a wasteful number, since it uses less digits than its factorization.

40023232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20216 (or 20206 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 40023232 is about 6326.3917045975. The cubic root of 40023232 is about 342.0613867898.

Adding to 40023232 its reverse (23232004), we get a palindrome (63255236).

It can be divided in two parts, 400 and 23232, that added together give a palindrome (23632).

The spelling of 40023232 in words is "forty million, twenty-three thousand, two hundred thirty-two".