22827813 has 4 divisors (see below), whose sum is σ = 30437088. Its totient is φ = 15218540.

The previous prime is 22827803. The next prime is 22827817. The reversal of 22827813 is 31872822.

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 22827813 - 2¹⁰ = 22826789 is a prime.

It is a super-2 number, since 2×22827813² = 1042218092725938, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22827817) 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, 3804633 + ... + 3804638.

It is an arithmetic number, because the mean of its divisors is an integer number (7609272).

Almost surely, 2^22827813 is an apocalyptic number.

It is an amenable number.

22827813 is a deficient number, since it is larger than the sum of its proper divisors (7609275).

22827813 is an equidigital number, since it uses as much as digits as its factorization.

22827813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7609274.

The product of its digits is 10752, while the sum is 33.

The square root of 22827813 is about 4777.8460628195. The cubic root of 22827813 is about 283.6752429091.

The spelling of 22827813 in words is "twenty-two million, eight hundred twenty-seven thousand, eight hundred thirteen".