22401646 has 16 divisors (see below), whose sum is σ = 35577360. Its totient is φ = 10549440.

The previous prime is 22401619. The next prime is 22401647. The reversal of 22401646 is 64610422.

It is a self number, because there is not a number n which added to its sum of digits gives 22401646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22401647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5250 + ... + 8506.

It is an arithmetic number, because the mean of its divisors is an integer number (2223585).

Almost surely, 2^22401646 is an apocalyptic number.

22401646 is a deficient number, since it is larger than the sum of its proper divisors (13175714).

22401646 is a wasteful number, since it uses less digits than its factorization.

22401646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3459.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 22401646 is about 4733.0377137733. The cubic root of 22401646 is about 281.8988537883.

The spelling of 22401646 in words is "twenty-two million, four hundred one thousand, six hundred forty-six".