22549956 has 96 divisors (see below), whose sum is σ = 65536128. Its totient is φ = 5928960.

The previous prime is 22549921. The next prime is 22549957. The reversal of 22549956 is 65994522.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22549957) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28786 + ... + 29558.

It is an arithmetic number, because the mean of its divisors is an integer number (682668).

Almost surely, 2^22549956 is an apocalyptic number.

22549956 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 22549956, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32768064).

22549956 is an abundant number, since it is smaller than the sum of its proper divisors (42986172).

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

22549956 is a wasteful number, since it uses less digits than its factorization.

22549956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 821 (or 819 counting only the distinct ones).

The product of its digits is 194400, while the sum is 42.

The square root of 22549956 is about 4748.6793953688. The cubic root of 22549956 is about 282.5195893169.

The spelling of 22549956 in words is "twenty-two million, five hundred forty-nine thousand, nine hundred fifty-six".