22490460 has 60 divisors (see below), whose sum is σ = 70558488. Its totient is φ = 5997024.

The previous prime is 22490459. The next prime is 22490467. The reversal of 22490460 is 6409422.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22490467) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5322 + ... + 8561.

Almost surely, 2^22490460 is an apocalyptic number.

22490460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22490460 is an abundant number, since it is smaller than the sum of its proper divisors (48068028).

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

22490460 is a wasteful number, since it uses less digits than its factorization.

22490460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13904 (or 13893 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 22490460 is about 4742.4107793400. The cubic root of 22490460 is about 282.2709030962.

Adding to 22490460 its reverse (6409422), we get a palindrome (28899882).

The spelling of 22490460 in words is "twenty-two million, four hundred ninety thousand, four hundred sixty".