22284737 has 4 divisors (see below), whose sum is σ = 22426836. Its totient is φ = 22142640.

The previous prime is 22284719. The next prime is 22284749. The reversal of 22284737 is 73748222.

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 13278736 + 9006001 = 3644^2 + 3001^2 .

It is a cyclic number.

It is not a de Polignac number, because 22284737 - 2¹² = 22280641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22284697 and 22284706.

It is not an unprimeable number, because it can be changed into a prime (22284797) 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, 70814 + ... + 71127.

It is an arithmetic number, because the mean of its divisors is an integer number (5606709).

Almost surely, 2^22284737 is an apocalyptic number.

It is an amenable number.

22284737 is a deficient number, since it is larger than the sum of its proper divisors (142099).

22284737 is a wasteful number, since it uses less digits than its factorization.

22284737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142098.

The product of its digits is 37632, while the sum is 35.

The square root of 22284737 is about 4720.6712446431. The cubic root of 22284737 is about 281.4076099648.

The spelling of 22284737 in words is "twenty-two million, two hundred eighty-four thousand, seven hundred thirty-seven".