22389460 has 12 divisors (see below), whose sum is σ = 47017908. Its totient is φ = 8955776.

The previous prime is 22389427. The next prime is 22389473. The reversal of 22389460 is 6498322.

It can be written as a sum of positive squares in 2 ways, for example, as 15856324 + 6533136 = 3982^2 + 2556^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 559717 + ... + 559756.

It is an arithmetic number, because the mean of its divisors is an integer number (3918159).

Almost surely, 2^22389460 is an apocalyptic number.

22389460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22389460 is an abundant number, since it is smaller than the sum of its proper divisors (24628448).

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

22389460 is a wasteful number, since it uses less digits than its factorization.

22389460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1119482 (or 1119480 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 22389460 is about 4731.7502047340. The cubic root of 22389460 is about 281.8477289362.

The spelling of 22389460 in words is "twenty-two million, three hundred eighty-nine thousand, four hundred sixty".