22284457 has 4 divisors (see below), whose sum is σ = 23998660. Its totient is φ = 20570256.

The previous prime is 22284419. The next prime is 22284461. The reversal of 22284457 is 75448222.

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 9865881 + 12418576 = 3141^2 + 3524^2 .

It is a cyclic number.

It is not a de Polignac number, because 22284457 - 2¹⁹ = 21760169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22284407) 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, 857082 + ... + 857107.

It is an arithmetic number, because the mean of its divisors is an integer number (5999665).

Almost surely, 2^22284457 is an apocalyptic number.

It is an amenable number.

22284457 is a deficient number, since it is larger than the sum of its proper divisors (1714203).

22284457 is a wasteful number, since it uses less digits than its factorization.

22284457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1714202.

The product of its digits is 35840, while the sum is 34.

The square root of 22284457 is about 4720.6415877505. The cubic root of 22284457 is about 281.4064313635.

It can be divided in two parts, 2228 and 4457, that multiplied together give a triangular number (9930196 = T₄₄₅₆).

The spelling of 22284457 in words is "twenty-two million, two hundred eighty-four thousand, four hundred fifty-seven".