22913005 has 4 divisors (see below), whose sum is σ = 27495612. Its totient is φ = 18330400.

The previous prime is 22912997. The next prime is 22913057. The reversal of 22913005 is 50031922.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4405801 + 18507204 = 2099^2 + 4302^2 .

It is not a de Polignac number, because 22913005 - 2³ = 22912997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2291296 + ... + 2291305.

It is an arithmetic number, because the mean of its divisors is an integer number (6873903).

Almost surely, 2^22913005 is an apocalyptic number.

It is an amenable number.

22913005 is a deficient number, since it is larger than the sum of its proper divisors (4582607).

22913005 is an equidigital number, since it uses as much as digits as its factorization.

22913005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4582606.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 22913005 is about 4786.7530748933. The cubic root of 22913005 is about 284.0276910446.

Adding to 22913005 its reverse (50031922), we get a palindrome (72944927).

The spelling of 22913005 in words is "twenty-two million, nine hundred thirteen thousand, five".