40135232 has 56 divisors (see below), whose sum is σ = 86694264. Its totient is φ = 18358272.

The previous prime is 40135229. The next prime is 40135247. The reversal of 40135232 is 23253104.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 27290176 + 12845056 = 5224^2 + 3584^2 .

It is a super-2 number, since 2×40135232² = 3221673695387648, which contains 22 as substring.

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, 39758 + ... + 40754.

Almost surely, 2^40135232 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 40135232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43347132).

40135232 is an abundant number, since it is smaller than the sum of its proper divisors (46559032).

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

40135232 is a wasteful number, since it uses less digits than its factorization.

40135232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1063 (or 1053 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 40135232 is about 6335.2373278355. The cubic root of 40135232 is about 342.3801616013.

Adding to 40135232 its reverse (23253104), we get a palindrome (63388336).

The spelling of 40135232 in words is "forty million, one hundred thirty-five thousand, two hundred thirty-two".