22195644 has 48 divisors (see below), whose sum is σ = 54528768. Its totient is φ = 7013248.

The previous prime is 22195633. The next prime is 22195651. The reversal of 22195644 is 44659122.

It is a super-2 number, since 2×22195644² = 985293225149472, which contains 22 as substring.

It is a congruent number.

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, 37519 + ... + 38105.

It is an arithmetic number, because the mean of its divisors is an integer number (1136016).

Almost surely, 2^22195644 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22195644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27264384).

22195644 is an abundant number, since it is smaller than the sum of its proper divisors (32333124).

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

22195644 is a wasteful number, since it uses less digits than its factorization.

22195644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 754 (or 752 counting only the distinct ones).

The product of its digits is 17280, while the sum is 33.

The square root of 22195644 is about 4711.2253183222. The cubic root of 22195644 is about 281.0320923483.

The spelling of 22195644 in words is "twenty-two million, one hundred ninety-five thousand, six hundred forty-four".