22554636 has 48 divisors (see below), whose sum is σ = 57087744. Its totient is φ = 6889536.

The previous prime is 22554629. The next prime is 22554659. The reversal of 22554636 is 63645522.

It is a junction number, because it is equal to n+sod(n) for n = 22554597 and 22554606.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24985 + ... + 25871.

It is an arithmetic number, because the mean of its divisors is an integer number (1189328).

Almost surely, 2^22554636 is an apocalyptic number.

22554636 is a gapful number since it is divisible by the number (26) 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 22554636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28543872).

22554636 is an abundant number, since it is smaller than the sum of its proper divisors (34533108).

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

22554636 is a wasteful number, since it uses less digits than its factorization.

22554636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1070 (or 1068 counting only the distinct ones).

The product of its digits is 43200, while the sum is 33.

The square root of 22554636 is about 4749.1721383837. The cubic root of 22554636 is about 282.5391325956.

The spelling of 22554636 in words is "twenty-two million, five hundred fifty-four thousand, six hundred thirty-six".