22285813 has 8 divisors (see below), whose sum is σ = 24536160. Its totient is φ = 20072880.

The previous prime is 22285799. The next prime is 22285817. The reversal of 22285813 is 31858222.

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

It is a cyclic number.

It is not a de Polignac number, because 22285813 - 2¹³ = 22277621 is a prime.

It is a super-2 number, since 2×22285813² = 993314922141938, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22285817) 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 7 ways as a sum of consecutive naturals, for example, 8095 + ... + 10492.

It is an arithmetic number, because the mean of its divisors is an integer number (3067020).

Almost surely, 2^22285813 is an apocalyptic number.

It is an amenable number.

22285813 is a deficient number, since it is larger than the sum of its proper divisors (2250347).

22285813 is a wasteful number, since it uses less digits than its factorization.

22285813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18707.

The product of its digits is 7680, while the sum is 31.

The square root of 22285813 is about 4720.7852101107. The cubic root of 22285813 is about 281.4121390694.

The spelling of 22285813 in words is "twenty-two million, two hundred eighty-five thousand, eight hundred thirteen".