40680432 has 120 divisors (see below), whose sum is σ = 126741888. Its totient is φ = 12096000.

The previous prime is 40680421. The next prime is 40680449. The reversal of 40680432 is 23408604.

It is a junction number, because it is equal to n+sod(n) for n = 40680396 and 40680405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57682 + ... + 58382.

Almost surely, 2^40680432 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 40680432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63370944).

40680432 is an abundant number, since it is smaller than the sum of its proper divisors (86061456).

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

40680432 is a wasteful number, since it uses less digits than its factorization.

40680432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 759 (or 750 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 40680432 is about 6378.1213535021. The cubic root of 40680432 is about 343.9235002055.

The spelling of 40680432 in words is "forty million, six hundred eighty thousand, four hundred thirty-two".