22330381 has 4 divisors (see below), whose sum is σ = 22340700. Its totient is φ = 22320064.

The previous prime is 22330369. The next prime is 22330397. The reversal of 22330381 is 18303322.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 21706281 + 624100 = 4659^2 + 790^2 .

It is a cyclic number.

It is not a de Polignac number, because 22330381 - 2⁵ = 22330349 is a prime.

It is a super-2 number, since 2×22330381² = 997291831210322, 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 (22330081) 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, 526 + ... + 6703.

It is an arithmetic number, because the mean of its divisors is an integer number (5585175).

Almost surely, 2^22330381 is an apocalyptic number.

It is an amenable number.

22330381 is a deficient number, since it is larger than the sum of its proper divisors (10319).

22330381 is an equidigital number, since it uses as much as digits as its factorization.

22330381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10318.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 22330381 is about 4725.5032536228. The cubic root of 22330381 is about 281.5996069869.

The spelling of 22330381 in words is "twenty-two million, three hundred thirty thousand, three hundred eighty-one".