22629813 has 4 divisors (see below), whose sum is σ = 30173088. Its totient is φ = 15086540.

The previous prime is 22629799. The next prime is 22629833. The reversal of 22629813 is 31892622.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22629813 - 2¹⁸ = 22367669 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22629833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3771633 + ... + 3771638.

It is an arithmetic number, because the mean of its divisors is an integer number (7543272).

Almost surely, 2^22629813 is an apocalyptic number.

It is an amenable number.

22629813 is a deficient number, since it is larger than the sum of its proper divisors (7543275).

22629813 is an equidigital number, since it uses as much as digits as its factorization.

22629813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7543274.

The product of its digits is 10368, while the sum is 33.

The square root of 22629813 is about 4757.0803020340. The cubic root of 22629813 is about 282.8526954641.

The spelling of 22629813 in words is "twenty-two million, six hundred twenty-nine thousand, eight hundred thirteen".