22274881 has 4 divisors (see below), whose sum is σ = 22292100. Its totient is φ = 22257664.

The previous prime is 22274869. The next prime is 22274891. The reversal of 22274881 is 18847222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 512656 + 21762225 = 716^2 + 4665^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22274881 is a prime.

It is a super-2 number, since 2×22274881² = 992340647128322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22274891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6496 + ... + 9313.

It is an arithmetic number, because the mean of its divisors is an integer number (5573025).

Almost surely, 2^22274881 is an apocalyptic number.

It is an amenable number.

22274881 is a deficient number, since it is larger than the sum of its proper divisors (17219).

22274881 is a wasteful number, since it uses less digits than its factorization.

22274881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17218.

The product of its digits is 14336, while the sum is 34.

The square root of 22274881 is about 4719.6272098546. The cubic root of 22274881 is about 281.3661172547.

The spelling of 22274881 in words is "twenty-two million, two hundred seventy-four thousand, eight hundred eighty-one".