22404843 has 24 divisors (see below), whose sum is σ = 33856368. Its totient is φ = 14805504.

The previous prime is 22404803. The next prime is 22404859. The reversal of 22404843 is 34840422.

It is a happy number.

It is not a de Polignac number, because 22404843 - 2⁶ = 22404779 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (22404803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32955 + ... + 33627.

It is an arithmetic number, because the mean of its divisors is an integer number (1410682).

Almost surely, 2^22404843 is an apocalyptic number.

22404843 is a deficient number, since it is larger than the sum of its proper divisors (11451525).

22404843 is an equidigital number, since it uses as much as digits as its factorization.

22404843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 825 (or 813 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

The square root of 22404843 is about 4733.3754340851. The cubic root of 22404843 is about 281.9122633352.

The spelling of 22404843 in words is "twenty-two million, four hundred four thousand, eight hundred forty-three".