22400023040 has 80 divisors (see below), whose sum is σ = 53753559552. Its totient is φ = 8952336384.

The previous prime is 22400023033. The next prime is 22400023049. The reversal of 22400023040 is 4032000422.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×22400023040² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22400023049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3701297 + ... + 3707343.

Almost surely, 2^22400023040 is an apocalyptic number.

22400023040 is a gapful number since it is divisible by the number (20) 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 22400023040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26876779776).

22400023040 is an abundant number, since it is smaller than the sum of its proper divisors (31353536512).

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

22400023040 is an equidigital number, since it uses as much as digits as its factorization.

22400023040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7517 (or 7501 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

Adding to 22400023040 its reverse (4032000422), we get a palindrome (26432023462).

The spelling of 22400023040 in words is "twenty-two billion, four hundred million, twenty-three thousand, forty".