22461020 has 12 divisors (see below), whose sum is σ = 47168184. Its totient is φ = 8984400.

The previous prime is 22461017. The next prime is 22461067. The reversal of 22461020 is 2016422.

It is a self number, because there is not a number n which added to its sum of digits gives 22461020.

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, 561506 + ... + 561545.

It is an arithmetic number, because the mean of its divisors is an integer number (3930682).

Almost surely, 2^22461020 is an apocalyptic number.

22461020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22461020 is an abundant number, since it is smaller than the sum of its proper divisors (24707164).

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

22461020 is a wasteful number, since it uses less digits than its factorization.

22461020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1123060 (or 1123058 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 22461020 is about 4739.3058563465. The cubic root of 22461020 is about 282.1476851632.

Adding to 22461020 its reverse (2016422), we get a palindrome (24477442).

The spelling of 22461020 in words is "twenty-two million, four hundred sixty-one thousand, twenty".