22290401 has 8 divisors (see below), whose sum is σ = 26815680. Its totient is φ = 18100368.

The previous prime is 22290343. The next prime is 22290409. The reversal of 22290401 is 10409222.

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

It is a cyclic number.

It is not a de Polignac number, because 22290401 - 2⁶ = 22290337 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22290409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83666 + ... + 83931.

It is an arithmetic number, because the mean of its divisors is an integer number (3351960).

Almost surely, 2^22290401 is an apocalyptic number.

It is an amenable number.

22290401 is a deficient number, since it is larger than the sum of its proper divisors (4525279).

22290401 is a wasteful number, since it uses less digits than its factorization.

22290401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167623.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 22290401 is about 4721.2711212130. The cubic root of 22290401 is about 281.4314492662.

Adding to 22290401 its reverse (10409222), we get a palindrome (32699623).

The spelling of 22290401 in words is "twenty-two million, two hundred ninety thousand, four hundred one".