22520230440 has 32 divisors (see below), whose sum is σ = 67560691680. Its totient is φ = 6005394752.

The previous prime is 22520230409. The next prime is 22520230487. The reversal of 22520230440 is 4403202522.

It is a happy number.

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 22520230440.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93834174 + ... + 93834413.

It is an arithmetic number, because the mean of its divisors is an integer number (2111271615).

Almost surely, 2^22520230440 is an apocalyptic number.

22520230440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22520230440 is an abundant number, since it is smaller than the sum of its proper divisors (45040461240).

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

22520230440 is a wasteful number, since it uses less digits than its factorization.

22520230440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187668601 (or 187668597 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 24.

Adding to 22520230440 its reverse (4403202522), we get a palindrome (26923432962).

The spelling of 22520230440 in words is "twenty-two billion, five hundred twenty million, two hundred thirty thousand, four hundred forty".