22658401 has 4 divisors (see below), whose sum is σ = 23085972. Its totient is φ = 22230832.

The previous prime is 22658387. The next prime is 22658407. The reversal of 22658401 is 10485622.

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 18662400 + 3996001 = 4320^2 + 1999^2 .

It is a cyclic number.

It is not a de Polignac number, because 22658401 - 2¹⁵ = 22625633 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22658401.

It is not an unprimeable number, because it can be changed into a prime (22658407) 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, 213706 + ... + 213811.

It is an arithmetic number, because the mean of its divisors is an integer number (5771493).

Almost surely, 2^22658401 is an apocalyptic number.

It is an amenable number.

22658401 is a deficient number, since it is larger than the sum of its proper divisors (427571).

22658401 is an equidigital number, since it uses as much as digits as its factorization.

22658401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427570.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 22658401 is about 4760.0841379118. The cubic root of 22658401 is about 282.9717536018.

The spelling of 22658401 in words is "twenty-two million, six hundred fifty-eight thousand, four hundred one".