22305234 has 32 divisors (see below), whose sum is σ = 52744320. Its totient is φ = 6152832.

The previous prime is 22305187. The next prime is 22305251. The reversal of 22305234 is 43250322.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 22305234.

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, 7939 + ... + 10374.

It is an arithmetic number, because the mean of its divisors is an integer number (1648260).

Almost surely, 2^22305234 is an apocalyptic number.

22305234 is an abundant number, since it is smaller than the sum of its proper divisors (30439086).

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

22305234 is a wasteful number, since it uses less digits than its factorization.

22305234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18354.

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 22305234 is about 4722.8417292982. The cubic root of 22305234 is about 281.4938609903.

Adding to 22305234 its reverse (43250322), we get a palindrome (65555556).

The spelling of 22305234 in words is "twenty-two million, three hundred five thousand, two hundred thirty-four".