22890001 has 4 divisors (see below), whose sum is σ = 22927600. Its totient is φ = 22852404.

The previous prime is 22889969. The next prime is 22890029. The reversal of 22890001 is 10009822.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22890001 - 2⁵ = 22889969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22890031) 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, 17871 + ... + 19108.

It is an arithmetic number, because the mean of its divisors is an integer number (5731900).

Almost surely, 2^22890001 is an apocalyptic number.

It is an amenable number.

22890001 is a deficient number, since it is larger than the sum of its proper divisors (37599).

22890001 is an equidigital number, since it uses as much as digits as its factorization.

22890001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37598.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 22890001 is about 4784.3495900697. The cubic root of 22890001 is about 283.9326073312.

Adding to 22890001 its reverse (10009822), we get a palindrome (32899823).

The spelling of 22890001 in words is "twenty-two million, eight hundred ninety thousand, one".