22810 has 8 divisors (see below), whose sum is σ = 41076. Its totient is φ = 9120.

The previous prime is 22807. The next prime is 22811. The reversal of 22810 is 1822.

It can be written as a sum of positive squares in 2 ways, for example, as 22801 + 9 = 151^2 + 3^2 .

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

It is a super-2 number, since 2×22810² = 1040592200, which contains 22 as substring.

It is a plaindrome in base 7 and base 12.

It is a nialpdrome in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1131 + ... + 1150.

2²²⁸¹⁰ is an apocalyptic number.

22810 is a deficient number, since it is larger than the sum of its proper divisors (18266).

22810 is a wasteful number, since it uses less digits than its factorization.

22810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2288.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 22810 is about 151.0297983843. The cubic root of 22810 is about 28.3601437883.

The spelling of 22810 in words is "twenty-two thousand, eight hundred ten".