22426403 has 24 divisors (see below), whose sum is σ = 25712928. Its totient is φ = 19502208.

The previous prime is 22426381. The next prime is 22426409. The reversal of 22426403 is 30462422.

It is not a de Polignac number, because 22426403 - 2⁸ = 22426147 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22426409) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 307175 + ... + 307247.

It is an arithmetic number, because the mean of its divisors is an integer number (1071372).

Almost surely, 2^22426403 is an apocalyptic number.

22426403 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

22426403 is a deficient number, since it is larger than the sum of its proper divisors (3286525).

22426403 is a wasteful number, since it uses less digits than its factorization.

22426403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171 (or 152 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 22426403 is about 4735.6523309888. The cubic root of 22426403 is about 282.0026616451.

Adding to 22426403 its reverse (30462422), we get a palindrome (52888825).

The spelling of 22426403 in words is "twenty-two million, four hundred twenty-six thousand, four hundred three".