22288305 has 16 divisors (see below), whose sum is σ = 38404800. Its totient is φ = 10972608.

The previous prime is 22288291. The next prime is 22288337. The reversal of 22288305 is 50388222.

It is not a de Polignac number, because 22288305 - 2⁷ = 22288177 is a prime.

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, 56955 + ... + 57344.

It is an arithmetic number, because the mean of its divisors is an integer number (2400300).

Almost surely, 2^22288305 is an apocalyptic number.

It is an amenable number.

22288305 is a deficient number, since it is larger than the sum of its proper divisors (16116495).

22288305 is a wasteful number, since it uses less digits than its factorization.

22288305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114320.

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 22288305 is about 4721.0491418751. The cubic root of 22288305 is about 281.4226278486.

The spelling of 22288305 in words is "twenty-two million, two hundred eighty-eight thousand, three hundred five".