22300381 has 4 divisors (see below), whose sum is σ = 22903132. Its totient is φ = 21697632.

The previous prime is 22300349. The next prime is 22300387. The reversal of 22300381 is 18300322.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18300322 = 2 ⋅9150161.

It can be written as a sum of positive squares in 2 ways, for example, as 20848356 + 1452025 = 4566^2 + 1205^2 .

It is a cyclic number.

It is not a de Polignac number, because 22300381 - 2⁵ = 22300349 is a prime.

It is a super-2 number, since 2×22300381² = 994613985490322, 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 (22300387) 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, 301320 + ... + 301393.

It is an arithmetic number, because the mean of its divisors is an integer number (5725783).

Almost surely, 2^22300381 is an apocalyptic number.

It is an amenable number.

22300381 is a deficient number, since it is larger than the sum of its proper divisors (602751).

22300381 is an equidigital number, since it uses as much as digits as its factorization.

22300381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602750.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 22300381 is about 4722.3279216929. The cubic root of 22300381 is about 281.4734444251.

The spelling of 22300381 in words is "twenty-two million, three hundred thousand, three hundred eighty-one".