22405234 has 8 divisors (see below), whose sum is σ = 33940908. Its totient is φ = 11091600.

The previous prime is 22405231. The next prime is 22405241. The reversal of 22405234 is 43250422.

It can be written as a sum of positive squares in 2 ways, for example, as 19829209 + 2576025 = 4453^2 + 1605^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (22405231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55257 + ... + 55660.

Almost surely, 2^22405234 is an apocalyptic number.

22405234 is a deficient number, since it is larger than the sum of its proper divisors (11535674).

22405234 is a wasteful number, since it uses less digits than its factorization.

22405234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111020.

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 22405234 is about 4733.4167363544. The cubic root of 22405234 is about 281.9139032642.

Adding to 22405234 its reverse (43250422), we get a palindrome (65655656).

The spelling of 22405234 in words is "twenty-two million, four hundred five thousand, two hundred thirty-four".