22294881 has 24 divisors (see below), whose sum is σ = 38076480. Its totient is φ = 12299616.

The previous prime is 22294849. The next prime is 22294901. The reversal of 22294881 is 18849222.

It is not a de Polignac number, because 22294881 - 2⁵ = 22294849 is a prime.

It is a super-2 number, since 2×22294881² = 994123437608322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22294801) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4275 + ... + 7928.

It is an arithmetic number, because the mean of its divisors is an integer number (1586520).

Almost surely, 2^22294881 is an apocalyptic number.

22294881 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22294881 is a deficient number, since it is larger than the sum of its proper divisors (15781599).

22294881 is a wasteful number, since it uses less digits than its factorization.

22294881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12245 (or 12242 counting only the distinct ones).

The product of its digits is 18432, while the sum is 36.

The square root of 22294881 is about 4721.7455458760. The cubic root of 22294881 is about 281.4503023506.

The spelling of 22294881 in words is "twenty-two million, two hundred ninety-four thousand, eight hundred eighty-one".