22288845 has 16 divisors (see below), whose sum is σ = 36813312. Its totient is φ = 11503680.

The previous prime is 22288831. The next prime is 22288859. The reversal of 22288845 is 54888222.

It is an interprime number because it is at equal distance from previous prime (22288831) and next prime (22288859).

It is not a de Polignac number, because 22288845 - 2⁴ = 22288829 is a prime.

It is a super-2 number, since 2×22288845² = 993585222868050, 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, 23502 + ... + 24431.

It is an arithmetic number, because the mean of its divisors is an integer number (2300832).

Almost surely, 2^22288845 is an apocalyptic number.

It is an amenable number.

22288845 is a deficient number, since it is larger than the sum of its proper divisors (14524467).

22288845 is a wasteful number, since it uses less digits than its factorization.

22288845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47972.

The product of its digits is 81920, while the sum is 39.

The square root of 22288845 is about 4721.1063322065. The cubic root of 22288845 is about 281.4249005950.

The spelling of 22288845 in words is "twenty-two million, two hundred eighty-eight thousand, eight hundred forty-five".