22491214 has 4 divisors (see below), whose sum is σ = 33736824. Its totient is φ = 11245606.

The previous prime is 22491191. The next prime is 22491253. The reversal of 22491214 is 41219422.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 41219422 = 2 ⋅20609711.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5622802 + ... + 5622805.

It is an arithmetic number, because the mean of its divisors is an integer number (8434206).

Almost surely, 2^22491214 is an apocalyptic number.

22491214 is a deficient number, since it is larger than the sum of its proper divisors (11245610).

22491214 is a wasteful number, since it uses less digits than its factorization.

22491214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11245609.

The product of its digits is 1152, while the sum is 25.

The square root of 22491214 is about 4742.4902741071. The cubic root of 22491214 is about 282.2740574689.

The spelling of 22491214 in words is "twenty-two million, four hundred ninety-one thousand, two hundred fourteen".