22401263 has 4 divisors (see below), whose sum is σ = 22465800. Its totient is φ = 22336728.

The previous prime is 22401259. The next prime is 22401299. The reversal of 22401263 is 36210422.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22401263 - 2² = 22401259 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22401163) 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, 31745 + ... + 32442.

It is an arithmetic number, because the mean of its divisors is an integer number (5616450).

Almost surely, 2^22401263 is an apocalyptic number.

22401263 is a deficient number, since it is larger than the sum of its proper divisors (64537).

22401263 is an equidigital number, since it uses as much as digits as its factorization.

22401263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64536.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 22401263 is about 4732.9972533269. The cubic root of 22401263 is about 281.8972472415.

Adding to 22401263 its reverse (36210422), we get a palindrome (58611685).

The spelling of 22401263 in words is "twenty-two million, four hundred one thousand, two hundred sixty-three".