22505838 has 16 divisors (see below), whose sum is σ = 45069696. Its totient is φ = 7492280.

The previous prime is 22505837. The next prime is 22505869. The reversal of 22505838 is 83850522.

It is a junction number, because it is equal to n+sod(n) for n = 22505799 and 22505808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22505831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3895 + ... + 7757.

It is an arithmetic number, because the mean of its divisors is an integer number (2816856).

Almost surely, 2^22505838 is an apocalyptic number.

22505838 is an abundant number, since it is smaller than the sum of its proper divisors (22563858).

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

22505838 is a wasteful number, since it uses less digits than its factorization.

22505838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4839.

The product of its (nonzero) digits is 19200, while the sum is 33.

The square root of 22505838 is about 4744.0318295728. The cubic root of 22505838 is about 282.3352233010.

The spelling of 22505838 in words is "twenty-two million, five hundred five thousand, eight hundred thirty-eight".