22064285 has 4 divisors (see below), whose sum is σ = 26477148. Its totient is φ = 17651424.

The previous prime is 22064269. The next prime is 22064293. The reversal of 22064285 is 58246022.

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 16924996 + 5139289 = 4114^2 + 2267^2 .

It is a cyclic number.

It is not a de Polignac number, because 22064285 - 2⁴ = 22064269 is a prime.

It is a super-2 number, since 2×22064285² = 973665345122450, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2206424 + ... + 2206433.

It is an arithmetic number, because the mean of its divisors is an integer number (6619287).

Almost surely, 2^22064285 is an apocalyptic number.

It is an amenable number.

22064285 is a deficient number, since it is larger than the sum of its proper divisors (4412863).

22064285 is an equidigital number, since it uses as much as digits as its factorization.

22064285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4412862.

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 22064285 is about 4697.2635650983. The cubic root of 22064285 is about 280.4765905415.

The spelling of 22064285 in words is "twenty-two million, sixty-four thousand, two hundred eighty-five".