22426281 has 16 divisors (see below), whose sum is σ = 35179200. Its totient is φ = 14071104.

The previous prime is 22426279. The next prime is 22426297. The reversal of 22426281 is 18262422.

It is a happy number.

It is not a de Polignac number, because 22426281 - 2¹ = 22426279 is a prime.

It is a super-2 number, since 2×22426281² = 1005876158981922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (22426211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23971 + ... + 24888.

It is an arithmetic number, because the mean of its divisors is an integer number (2198700).

Almost surely, 2^22426281 is an apocalyptic number.

It is an amenable number.

22426281 is a deficient number, since it is larger than the sum of its proper divisors (12752919).

22426281 is a wasteful number, since it uses less digits than its factorization.

22426281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48885 (or 48879 counting only the distinct ones).

The product of its digits is 3072, while the sum is 27.

The square root of 22426281 is about 4735.6394499582. The cubic root of 22426281 is about 282.0021502779.

The spelling of 22426281 in words is "twenty-two million, four hundred twenty-six thousand, two hundred eighty-one".