22382181 has 24 divisors (see below), whose sum is σ = 33465120. Its totient is φ = 14407200.

The previous prime is 22382167. The next prime is 22382189. The reversal of 22382181 is 18128322.

It is not a de Polignac number, because 22382181 - 2⁶ = 22382117 is a prime.

It is a super-2 number, since 2×22382181² = 1001924052633522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22382189) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32046 + ... + 32736.

It is an arithmetic number, because the mean of its divisors is an integer number (1394380).

Almost surely, 2^22382181 is an apocalyptic number.

It is an amenable number.

22382181 is a deficient number, since it is larger than the sum of its proper divisors (11082939).

22382181 is a wasteful number, since it uses less digits than its factorization.

22382181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 817 (or 814 counting only the distinct ones).

The product of its digits is 1536, while the sum is 27.

The square root of 22382181 is about 4730.9809764995. The cubic root of 22382181 is about 281.8171819439.

The spelling of 22382181 in words is "twenty-two million, three hundred eighty-two thousand, one hundred eighty-one".