22905020 has 24 divisors (see below), whose sum is σ = 48192144. Its totient is φ = 9144576.

The previous prime is 22905017. The next prime is 22905049. The reversal of 22905020 is 2050922.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 22904983 and 22905001.

It is a congruent number.

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, 17012 + ... + 18308.

It is an arithmetic number, because the mean of its divisors is an integer number (2008006).

Almost surely, 2^22905020 is an apocalyptic number.

22905020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22905020 is an abundant number, since it is smaller than the sum of its proper divisors (25287124).

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

22905020 is a wasteful number, since it uses less digits than its factorization.

22905020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2189 (or 2187 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 22905020 is about 4785.9189295265. The cubic root of 22905020 is about 283.9946934140.

Adding to 22905020 its reverse (2050922), we get a palindrome (24955942).

The spelling of 22905020 in words is "twenty-two million, nine hundred five thousand, twenty".