22513233 has 8 divisors (see below), whose sum is σ = 31597600. Its totient is φ = 14218848.

The previous prime is 22513217. The next prime is 22513243. The reversal of 22513233 is 33231522.

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

It is not a de Polignac number, because 22513233 - 2⁴ = 22513217 is a prime.

It is a super-2 number, since 2×22513233² = 1013691320224578, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22513213) 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, 197428 + ... + 197541.

It is an arithmetic number, because the mean of its divisors is an integer number (3949700).

Almost surely, 2^22513233 is an apocalyptic number.

It is an amenable number.

22513233 is a deficient number, since it is larger than the sum of its proper divisors (9084367).

22513233 is a wasteful number, since it uses less digits than its factorization.

22513233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394991.

The product of its digits is 1080, while the sum is 21.

The square root of 22513233 is about 4744.8111658948. The cubic root of 22513233 is about 282.3661432833.

Adding to 22513233 its reverse (33231522), we get a palindrome (55744755).

The spelling of 22513233 in words is "twenty-two million, five hundred thirteen thousand, two hundred thirty-three".