22494641 has 4 divisors (see below), whose sum is σ = 24225012. Its totient is φ = 20764272.

The previous prime is 22494607. The next prime is 22494649. The reversal of 22494641 is 14649422.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5856400 + 16638241 = 2420^2 + 4079^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22494641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22494598 and 22494607.

It is not an unprimeable number, because it can be changed into a prime (22494649) 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, 865166 + ... + 865191.

It is an arithmetic number, because the mean of its divisors is an integer number (6056253).

Almost surely, 2^22494641 is an apocalyptic number.

It is an amenable number.

22494641 is a deficient number, since it is larger than the sum of its proper divisors (1730371).

22494641 is a wasteful number, since it uses less digits than its factorization.

22494641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1730370.

The product of its digits is 13824, while the sum is 32.

The square root of 22494641 is about 4742.8515684132. The cubic root of 22494641 is about 282.2883934976.

The spelling of 22494641 in words is "twenty-two million, four hundred ninety-four thousand, six hundred forty-one".