22401672 has 16 divisors (see below), whose sum is σ = 56004240. Its totient is φ = 7467216.

The previous prime is 22401647. The next prime is 22401679. The reversal of 22401672 is 27610422.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 933403 = 22401672 / (2 + 2 + 4 + 0 + 1 + 6 + 7 + 2).

It is not an unprimeable number, because it can be changed into a prime (22401679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 466678 + ... + 466725.

It is an arithmetic number, because the mean of its divisors is an integer number (3500265).

Almost surely, 2^22401672 is an apocalyptic number.

It is an amenable number.

22401672 is an abundant number, since it is smaller than the sum of its proper divisors (33602568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22401672 is a wasteful number, since it uses less digits than its factorization.

22401672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 933412 (or 933408 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 22401672 is about 4733.0404604229. The cubic root of 22401672 is about 281.8989628483.

The spelling of 22401672 in words is "twenty-two million, four hundred one thousand, six hundred seventy-two".