40253632 has 56 divisors (see below), whose sum is σ = 83393280. Its totient is φ = 19261440.

The previous prime is 40253627. The next prime is 40253687. The reversal of 40253632 is 23635204.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 40253597 and 40253606.

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, 210657 + ... + 210847.

Almost surely, 2^40253632 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 40253632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41696640).

40253632 is an abundant number, since it is smaller than the sum of its proper divisors (43139648).

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

40253632 is a wasteful number, since it uses less digits than its factorization.

40253632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329 (or 319 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 40253632 is about 6344.5750054673. The cubic root of 40253632 is about 342.7165079300.

Adding to 40253632 its reverse (23635204), we get a palindrome (63888836).

The spelling of 40253632 in words is "forty million, two hundred fifty-three thousand, six hundred thirty-two".