22428001 has 2 divisors, whose sum is σ = 22428002. Its totient is φ = 22428000.

The previous prime is 22427989. The next prime is 22428017. The reversal of 22428001 is 10082422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19184400 + 3243601 = 4380^2 + 1801^2 .

It is a cyclic number.

It is not a de Polignac number, because 22428001 - 2⁵ = 22427969 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22428001.

It is not a weakly prime, because it can be changed into another prime (22428041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11214000 + 11214001.

It is an arithmetic number, because the mean of its divisors is an integer number (11214001).

Almost surely, 2^22428001 is an apocalyptic number.

It is an amenable number.

22428001 is a deficient number, since it is larger than the sum of its proper divisors (1).

22428001 is an equidigital number, since it uses as much as digits as its factorization.

22428001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 22428001 is about 4735.8210481394. The cubic root of 22428001 is about 282.0093595472.

The spelling of 22428001 in words is "twenty-two million, four hundred twenty-eight thousand, one".