40581992 has 32 divisors (see below), whose sum is σ = 87894720. Its totient is φ = 17360640.

The previous prime is 40581949. The next prime is 40582001. The reversal of 40581992 is 29918504.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12068 + ... + 15059.

It is an arithmetic number, because the mean of its divisors is an integer number (2746710).

Almost surely, 2^40581992 is an apocalyptic number.

It is an amenable number.

40581992 is an abundant number, since it is smaller than the sum of its proper divisors (47312728).

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

40581992 is a wasteful number, since it uses less digits than its factorization.

40581992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27161 (or 27157 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 40581992 is about 6370.3996734899. The cubic root of 40581992 is about 343.6458632435.

The spelling of 40581992 in words is "forty million, five hundred eighty-one thousand, nine hundred ninety-two".