22468381 has 6 divisors (see below), whose sum is σ = 24329850. Its totient is φ = 20739888.

The previous prime is 22468379. The next prime is 22468421. The reversal of 22468381 is 18386422.

It can be written as a sum of positive squares in 3 ways, for example, as 95481 + 22372900 = 309^2 + 4730^2 .

It is not a de Polignac number, because 22468381 - 2¹ = 22468379 is a prime.

It is a super-2 number, since 2×22468381² = 1009656289522322, 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 (22468331) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 66306 + ... + 66643.

It is an arithmetic number, because the mean of its divisors is an integer number (4054975).

Almost surely, 2^22468381 is an apocalyptic number.

It is an amenable number.

22468381 is a deficient number, since it is larger than the sum of its proper divisors (1861469).

22468381 is a wasteful number, since it uses less digits than its factorization.

22468381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132975 (or 132962 counting only the distinct ones).

The product of its digits is 18432, while the sum is 34.

The square root of 22468381 is about 4740.0823832503. The cubic root of 22468381 is about 282.1785039219.

The spelling of 22468381 in words is "twenty-two million, four hundred sixty-eight thousand, three hundred eighty-one".