40090232 has 48 divisors (see below), whose sum is σ = 94179960. Its totient is φ = 15857856.

The previous prime is 40090231. The next prime is 40090249. The reversal of 40090232 is 23209004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40090231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1163 + ... + 9029.

Almost surely, 2^40090232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40090232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47089980).

40090232 is an abundant number, since it is smaller than the sum of its proper divisors (54089728).

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

40090232 is a wasteful number, since it uses less digits than its factorization.

40090232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7900 (or 7889 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 40090232 is about 6331.6847678955. The cubic root of 40090232 is about 342.2521537946.

Adding to 40090232 its reverse (23209004), we get a palindrome (63299236).

The spelling of 40090232 in words is "forty million, ninety thousand, two hundred thirty-two".