22402042440 has 64 divisors (see below), whose sum is σ = 67257250560. Its totient is φ = 5969333760.

The previous prime is 22402042393. The next prime is 22402042441. The reversal of 22402042440 is 4424020422.

It is a super-2 number, since 2×22402042440² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 22402042440.

It is not an unprimeable number, because it can be changed into a prime (22402042441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88900 + ... + 229580.

It is an arithmetic number, because the mean of its divisors is an integer number (1050894540).

Almost surely, 2^22402042440 is an apocalyptic number.

22402042440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22402042440 is an abundant number, since it is smaller than the sum of its proper divisors (44855208120).

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

22402042440 is a wasteful number, since it uses less digits than its factorization.

22402042440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142022 (or 142018 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 24.

Adding to 22402042440 its reverse (4424020422), we get a palindrome (26826062862).

The spelling of 22402042440 in words is "twenty-two billion, four hundred two million, forty-two thousand, four hundred forty".