22282981 has 8 divisors (see below), whose sum is σ = 25551680. Its totient is φ = 19035648.

The previous prime is 22282973. The next prime is 22283011. The reversal of 22282981 is 18928222.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22282981 - 2³ = 22282973 is a prime.

It is a super-2 number, since 2×22282981² = 993062484492722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22282181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3036 + ... + 7333.

It is an arithmetic number, because the mean of its divisors is an integer number (3193960).

Almost surely, 2^22282981 is an apocalyptic number.

It is an amenable number.

22282981 is a deficient number, since it is larger than the sum of its proper divisors (3268699).

22282981 is a wasteful number, since it uses less digits than its factorization.

22282981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10683.

The product of its digits is 9216, while the sum is 34.

The square root of 22282981 is about 4720.4852504801. The cubic root of 22282981 is about 281.4002182877.

The spelling of 22282981 in words is "twenty-two million, two hundred eighty-two thousand, nine hundred eighty-one".