22305838 has 4 divisors (see below), whose sum is σ = 33458760. Its totient is φ = 11152918.

The previous prime is 22305823. The next prime is 22305839. The reversal of 22305838 is 83850322.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83850322 = 2 ⋅41925161.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22305839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5576458 + ... + 5576461.

It is an arithmetic number, because the mean of its divisors is an integer number (8364690).

Almost surely, 2^22305838 is an apocalyptic number.

22305838 is a deficient number, since it is larger than the sum of its proper divisors (11152922).

22305838 is a wasteful number, since it uses less digits than its factorization.

22305838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11152921.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 22305838 is about 4722.9056734176. The cubic root of 22305838 is about 281.4964018103.

The spelling of 22305838 in words is "twenty-two million, three hundred five thousand, eight hundred thirty-eight".