40992220 has 12 divisors (see below), whose sum is σ = 86083704. Its totient is φ = 16396880.

The previous prime is 40992191. The next prime is 40992227. The reversal of 40992220 is 2229904.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40992227) 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, 1024786 + ... + 1024825.

It is an arithmetic number, because the mean of its divisors is an integer number (7173642).

Almost surely, 2^40992220 is an apocalyptic number.

It is an amenable number.

40992220 is an abundant number, since it is smaller than the sum of its proper divisors (45091484).

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

40992220 is a wasteful number, since it uses less digits than its factorization.

40992220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2049620 (or 2049618 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 40992220 is about 6402.5166926764. The cubic root of 40992220 is about 344.7999119837.

It can be divided in two parts, 409 and 92220, that added together give a palindrome (92629).

The spelling of 40992220 in words is "forty million, nine hundred ninety-two thousand, two hundred twenty".