22510023 has 32 divisors (see below), whose sum is σ = 33269760. Its totient is φ = 13478400.

The previous prime is 22509983. The next prime is 22510043. The reversal of 22510023 is 32001522.

It is not a de Polignac number, because 22510023 - 2¹² = 22505927 is a prime.

It is a super-2 number, since 2×22510023² = 1013402270921058, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22509984 and 22510011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22510043) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 148998 + ... + 149148.

It is an arithmetic number, because the mean of its divisors is an integer number (1039680).

Almost surely, 2^22510023 is an apocalyptic number.

22510023 is a deficient number, since it is larger than the sum of its proper divisors (10759737).

22510023 is a wasteful number, since it uses less digits than its factorization.

22510023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 22510023 is about 4744.4728895843. The cubic root of 22510023 is about 282.3527224595.

Adding to 22510023 its reverse (32001522), we get a palindrome (54511545).

The spelling of 22510023 in words is "twenty-two million, five hundred ten thousand, twenty-three".