40340972 has 24 divisors (see below), whose sum is σ = 83465760. Its totient is φ = 16692480.

The previous prime is 40340969. The next prime is 40340977. The reversal of 40340972 is 27904304.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is not an unprimeable number, because it can be changed into a prime (40340977) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24029 + ... + 25652.

It is an arithmetic number, because the mean of its divisors is an integer number (3477740).

Almost surely, 2^40340972 is an apocalyptic number.

It is an amenable number.

40340972 is an abundant number, since it is smaller than the sum of its proper divisors (43124788).

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

40340972 is a wasteful number, since it uses less digits than its factorization.

40340972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49721 (or 49719 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 40340972 is about 6351.4543216495. The cubic root of 40340972 is about 342.9641976871.

The spelling of 40340972 in words is "forty million, three hundred forty thousand, nine hundred seventy-two".