22369281 has 8 divisors (see below), whose sum is σ = 32537184. Its totient is φ = 13557120.

The previous prime is 22369273. The next prime is 22369309. The reversal of 22369281 is 18296322.

It is a happy number.

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

It is not a de Polignac number, because 22369281 - 2³ = 22369273 is a prime.

It is a super-2 number, since 2×22369281² = 1000769464913922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 677857 = 22369281 / (2 + 2 + 3 + 6 + 9 + 2 + 8 + 1).

It is not an unprimeable number, because it can be changed into a prime (22369211) 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, 338896 + ... + 338961.

It is an arithmetic number, because the mean of its divisors is an integer number (4067148).

Almost surely, 2^22369281 is an apocalyptic number.

It is an amenable number.

22369281 is a deficient number, since it is larger than the sum of its proper divisors (10167903).

22369281 is a wasteful number, since it uses less digits than its factorization.

22369281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677871.

The product of its digits is 10368, while the sum is 33.

The square root of 22369281 is about 4729.6174263887. The cubic root of 22369281 is about 281.7630296356.

The spelling of 22369281 in words is "twenty-two million, three hundred sixty-nine thousand, two hundred eighty-one".