22426405 has 8 divisors (see below), whose sum is σ = 26954784. Its totient is φ = 17912400.

The previous prime is 22426381. The next prime is 22426409. The reversal of 22426405 is 50462422.

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

It is not a de Polignac number, because 22426405 - 2⁷ = 22426277 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22426405.

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 7 ways as a sum of consecutive naturals, for example, 210 + ... + 6700.

It is an arithmetic number, because the mean of its divisors is an integer number (3369348).

Almost surely, 2^22426405 is an apocalyptic number.

It is an amenable number.

22426405 is a deficient number, since it is larger than the sum of its proper divisors (4528379).

22426405 is an equidigital number, since it uses as much as digits as its factorization.

22426405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7187.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 22426405 is about 4735.6525421530. The cubic root of 22426405 is about 282.0026700282.

Adding to 22426405 its reverse (50462422), we get a palindrome (72888827).

The spelling of 22426405 in words is "twenty-two million, four hundred twenty-six thousand, four hundred five".