22685500 has 48 divisors (see below), whose sum is σ = 50450400. Its totient is φ = 8908800.

The previous prime is 22685491. The next prime is 22685501. The reversal of 22685500 is 558622.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22685501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29116 + ... + 29884.

It is an arithmetic number, because the mean of its divisors is an integer number (1051050).

Almost surely, 2^22685500 is an apocalyptic number.

22685500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22685500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25225200).

22685500 is an abundant number, since it is smaller than the sum of its proper divisors (27764900).

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

22685500 is a wasteful number, since it uses less digits than its factorization.

22685500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847 (or 835 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 22685500 is about 4762.9297706349. The cubic root of 22685500 is about 283.0845182015.

The spelling of 22685500 in words is "twenty-two million, six hundred eighty-five thousand, five hundred".