22451894 has 4 divisors (see below), whose sum is σ = 33677844. Its totient is φ = 11225946.

The previous prime is 22451861. The next prime is 22451921. The reversal of 22451894 is 49815422.

It is a semiprime because it is the product of two primes.

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, 5612972 + ... + 5612975.

It is an arithmetic number, because the mean of its divisors is an integer number (8419461).

Almost surely, 2^22451894 is an apocalyptic number.

22451894 is a deficient number, since it is larger than the sum of its proper divisors (11225950).

22451894 is a wasteful number, since it uses less digits than its factorization.

22451894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11225949.

The product of its digits is 23040, while the sum is 35.

The square root of 22451894 is about 4738.3429593055. The cubic root of 22451894 is about 282.1094674185.

The spelling of 22451894 in words is "twenty-two million, four hundred fifty-one thousand, eight hundred ninety-four".