40380732 has 72 divisors (see below), whose sum is σ = 121744896. Its totient is φ = 11034144.

The previous prime is 40380707. The next prime is 40380733. The reversal of 40380732 is 23708304.

It is a junction number, because it is equal to n+sod(n) for n = 40380696 and 40380705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40380733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2313 + ... + 9279.

Almost surely, 2^40380732 is an apocalyptic number.

40380732 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40380732, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60872448).

40380732 is an abundant number, since it is smaller than the sum of its proper divisors (81364164).

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

40380732 is a wasteful number, since it uses less digits than its factorization.

40380732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7007 (or 7002 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 40380732 is about 6354.5835426092. The cubic root of 40380732 is about 343.0768356853.

The spelling of 40380732 in words is "forty million, three hundred eighty thousand, seven hundred thirty-two".