40522412 has 72 divisors (see below), whose sum is σ = 87907680. Its totient is φ = 16262400.

The previous prime is 40522411. The next prime is 40522457. The reversal of 40522412 is 21422504.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (40522411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 401162 + ... + 401262.

It is an arithmetic number, because the mean of its divisors is an integer number (1220940).

Almost surely, 2^40522412 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 40522412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43953840).

40522412 is an abundant number, since it is smaller than the sum of its proper divisors (47385268).

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

40522412 is a wasteful number, since it uses less digits than its factorization.

40522412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231 (or 222 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 40522412 is about 6365.7216401599. The cubic root of 40522412 is about 343.4776075923.

Adding to 40522412 its reverse (21422504), we get a palindrome (61944916).

The spelling of 40522412 in words is "forty million, five hundred twenty-two thousand, four hundred twelve".