40522440 has 128 divisors (see below), whose sum is σ = 146304000. Its totient is φ = 8771328.

The previous prime is 40522411. The next prime is 40522457. The reversal of 40522440 is 4422504.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 14691 + ... + 17229.

It is an arithmetic number, because the mean of its divisors is an integer number (1143000).

Almost surely, 2^40522440 is an apocalyptic number.

40522440 is a gapful number since it is divisible by the number (40) 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 40522440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73152000).

40522440 is an abundant number, since it is smaller than the sum of its proper divisors (105781560).

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

40522440 is a wasteful number, since it uses less digits than its factorization.

40522440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2579 (or 2575 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 40522440 is about 6365.7238394388. The cubic root of 40522440 is about 343.4776867038.

Adding to 40522440 its reverse (4422504), we get a palindrome (44944944).

The spelling of 40522440 in words is "forty million, five hundred twenty-two thousand, four hundred forty".