22636401 has 8 divisors (see below), whose sum is σ = 31957344. Its totient is φ = 14203200.

The previous prime is 22636381. The next prime is 22636409. The reversal of 22636401 is 10463622.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22636401 - 2⁶ = 22636337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22636409) 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, 221875 + ... + 221976.

It is an arithmetic number, because the mean of its divisors is an integer number (3994668).

Almost surely, 2^22636401 is an apocalyptic number.

It is an amenable number.

22636401 is a deficient number, since it is larger than the sum of its proper divisors (9320943).

22636401 is a wasteful number, since it uses less digits than its factorization.

22636401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443871.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 22636401 is about 4757.7726931832. The cubic root of 22636401 is about 282.8801408633.

The spelling of 22636401 in words is "twenty-two million, six hundred thirty-six thousand, four hundred one".