22494242 has 4 divisors (see below), whose sum is σ = 33741366. Its totient is φ = 11247120.

The previous prime is 22494229. The next prime is 22494259. The reversal of 22494242 is 24249422.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24249422 = 2 ⋅12124711.

It can be written as a sum of positive squares in only one way, i.e., 22477081 + 17161 = 4741^2 + 131^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5623559 + ... + 5623562.

Almost surely, 2^22494242 is an apocalyptic number.

22494242 is a deficient number, since it is larger than the sum of its proper divisors (11247124).

22494242 is a wasteful number, since it uses less digits than its factorization.

22494242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11247123.

The product of its digits is 9216, while the sum is 29.

The square root of 22494242 is about 4742.8095049243. The cubic root of 22494242 is about 282.2867244521.

The spelling of 22494242 in words is "twenty-two million, four hundred ninety-four thousand, two hundred forty-two".