22461644 has 6 divisors (see below), whose sum is σ = 39307884. Its totient is φ = 11230820.

The previous prime is 22461643. The next prime is 22461679. The reversal of 22461644 is 44616422.

It is a happy number.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (22461643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2807702 + ... + 2807709.

It is an arithmetic number, because the mean of its divisors is an integer number (6551314).

Almost surely, 2^22461644 is an apocalyptic number.

It is an amenable number.

22461644 is a deficient number, since it is larger than the sum of its proper divisors (16846240).

22461644 is a wasteful number, since it uses less digits than its factorization.

22461644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5615415 (or 5615413 counting only the distinct ones).

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

The square root of 22461644 is about 4739.3716883148. The cubic root of 22461644 is about 282.1502979642.

The spelling of 22461644 in words is "twenty-two million, four hundred sixty-one thousand, six hundred forty-four".