40631488 has 28 divisors (see below), whose sum is σ = 81610200. Its totient is φ = 20068352.

The previous prime is 40631477. The next prime is 40631489. The reversal of 40631488 is 88413604.

It is not an unprimeable number, because it can be changed into a prime (40631489) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1488 + ... + 9136.

It is an arithmetic number, because the mean of its divisors is an integer number (2914650).

Almost surely, 2^40631488 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 40631488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40805100).

40631488 is an abundant number, since it is smaller than the sum of its proper divisors (40978712).

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

40631488 is an equidigital number, since it uses as much as digits as its factorization.

40631488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7744 (or 7734 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 40631488 is about 6374.2833322657. The cubic root of 40631488 is about 343.7855161981.

The spelling of 40631488 in words is "forty million, six hundred thirty-one thousand, four hundred eighty-eight".