22245020 has 36 divisors (see below), whose sum is σ = 54343800. Its totient is φ = 7626528.

The previous prime is 22245019. The next prime is 22245031. The reversal of 22245020 is 2054222.

22245020 is nontrivially palindromic in base 6.

It is a self number, because there is not a number n which added to its sum of digits gives 22245020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10370 + ... + 12329.

It is an arithmetic number, because the mean of its divisors is an integer number (1509550).

Almost surely, 2^22245020 is an apocalyptic number.

22245020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22245020 is an abundant number, since it is smaller than the sum of its proper divisors (32098780).

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

22245020 is a wasteful number, since it uses less digits than its factorization.

22245020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22722 (or 22713 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 22245020 is about 4716.4626575433. The cubic root of 22245020 is about 281.2403308610.

Adding to 22245020 its reverse (2054222), we get a palindrome (24299242).

The spelling of 22245020 in words is "twenty-two million, two hundred forty-five thousand, twenty".