22512423 has 16 divisors (see below), whose sum is σ = 31435776. Its totient is φ = 14303520.

The previous prime is 22512421. The next prime is 22512431. The reversal of 22512423 is 32421522.

It is not a de Polignac number, because 22512423 - 2¹ = 22512421 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22512423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22512421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29361 + ... + 30117.

It is an arithmetic number, because the mean of its divisors is an integer number (1964736).

Almost surely, 2^22512423 is an apocalyptic number.

22512423 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

22512423 is a deficient number, since it is larger than the sum of its proper divisors (8923353).

22512423 is a wasteful number, since it uses less digits than its factorization.

22512423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1214.

The product of its digits is 960, while the sum is 21.

The square root of 22512423 is about 4744.7258087270. The cubic root of 22512423 is about 282.3627568406.

Adding to 22512423 its reverse (32421522), we get a palindrome (54933945).

Subtracting 22512423 from its reverse (32421522), we obtain a palindrome (9909099).

The spelling of 22512423 in words is "twenty-two million, five hundred twelve thousand, four hundred twenty-three".