22870281 has 48 divisors (see below), whose sum is σ = 38768640. Its totient is φ = 11702880.

The previous prime is 22870273. The next prime is 22870297. The reversal of 22870281 is 18207822.

It is a happy number.

It is not a de Polignac number, because 22870281 - 2³ = 22870273 is a prime.

It is a super-2 number, since 2×22870281² = 1046099506037922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22870201) 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 47 ways as a sum of consecutive naturals, for example, 531846 + ... + 531888.

It is an arithmetic number, because the mean of its divisors is an integer number (807680).

Almost surely, 2^22870281 is an apocalyptic number.

22870281 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22870281 is a deficient number, since it is larger than the sum of its proper divisors (15898359).

22870281 is a wasteful number, since it uses less digits than its factorization.

22870281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146 (or 103 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 30.

The square root of 22870281 is about 4782.2882598187. The cubic root of 22870281 is about 283.8510468324.

The spelling of 22870281 in words is "twenty-two million, eight hundred seventy thousand, two hundred eighty-one".