22455287940 has 48 divisors (see below), whose sum is σ = 66184009920. Its totient is φ = 5672914560.

The previous prime is 22455287927. The next prime is 22455287963. The reversal of 22455287940 is 4978255422.

It is a self number, because there is not a number n which added to its sum of digits gives 22455287940.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9847671 + ... + 9849950.

It is an arithmetic number, because the mean of its divisors is an integer number (1378833540).

Almost surely, 2^22455287940 is an apocalyptic number.

22455287940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22455287940 is an abundant number, since it is smaller than the sum of its proper divisors (43728721980).

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

22455287940 is a wasteful number, since it uses less digits than its factorization.

22455287940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19697652 (or 19697650 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 48.

The spelling of 22455287940 in words is "twenty-two billion, four hundred fifty-five million, two hundred eighty-seven thousand, nine hundred forty".