22744281 has 12 divisors (see below), whose sum is σ = 35277072. Its totient is φ = 12996648.

The previous prime is 22744247. The next prime is 22744313. The reversal of 22744281 is 18244722.

It is not a de Polignac number, because 22744281 - 2⁹ = 22743769 is a prime.

It is a super-2 number, since 2×22744281² = 1034604636413922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22744681) 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 11 ways as a sum of consecutive naturals, for example, 77215 + ... + 77508.

It is an arithmetic number, because the mean of its divisors is an integer number (2939756).

Almost surely, 2^22744281 is an apocalyptic number.

22744281 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22744281 is a deficient number, since it is larger than the sum of its proper divisors (12532791).

22744281 is a wasteful number, since it uses less digits than its factorization.

22744281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154740 (or 154733 counting only the distinct ones).

The product of its digits is 7168, while the sum is 30.

The square root of 22744281 is about 4769.0964553047. The cubic root of 22744281 is about 283.3288099239.

It can be divided in two parts, 2274 and 4281, that added together give a triangular number (6555 = T₁₁₄).

The spelling of 22744281 in words is "twenty-two million, seven hundred forty-four thousand, two hundred eighty-one".