22826381 has 4 divisors (see below), whose sum is σ = 23383164. Its totient is φ = 22269600.

The previous prime is 22826369. The next prime is 22826399. The reversal of 22826381 is 18362822.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13468900 + 9357481 = 3670^2 + 3059^2 .

It is a cyclic number.

It is not a de Polignac number, because 22826381 - 2²² = 18632077 is a prime.

It is a super-2 number, since 2×22826381² = 1042087339114322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22826341) 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 3 ways as a sum of consecutive naturals, for example, 278330 + ... + 278411.

It is an arithmetic number, because the mean of its divisors is an integer number (5845791).

Almost surely, 2^22826381 is an apocalyptic number.

It is an amenable number.

22826381 is a deficient number, since it is larger than the sum of its proper divisors (556783).

22826381 is an equidigital number, since it uses as much as digits as its factorization.

22826381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556782.

The product of its digits is 9216, while the sum is 32.

The square root of 22826381 is about 4777.6962021460. The cubic root of 22826381 is about 283.6693110889.

The spelling of 22826381 in words is "twenty-two million, eight hundred twenty-six thousand, three hundred eighty-one".