40240332 has 72 divisors (see below), whose sum is σ = 111663552. Its totient is φ = 12117600.

The previous prime is 40240261. The next prime is 40240339. The reversal of 40240332 is 23304204.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (40240339) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 121407 + ... + 121737.

Almost surely, 2^40240332 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 40240332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55831776).

40240332 is an abundant number, since it is smaller than the sum of its proper divisors (71423220).

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

40240332 is a wasteful number, since it uses less digits than its factorization.

40240332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659 (or 654 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 40240332 is about 6343.5267793239. The cubic root of 40240332 is about 342.6787586932.

Adding to 40240332 its reverse (23304204), we get a palindrome (63544536).

The spelling of 40240332 in words is "forty million, two hundred forty thousand, three hundred thirty-two".