22028285 has 8 divisors (see below), whose sum is σ = 26459136. Its totient is φ = 17605840.

The previous prime is 22028269. The next prime is 22028287. The reversal of 22028285 is 58282022.

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

It is not a de Polignac number, because 22028285 - 2⁴ = 22028269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22028287) 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, 9380 + ... + 11490.

It is an arithmetic number, because the mean of its divisors is an integer number (3307392).

Almost surely, 2^22028285 is an apocalyptic number.

It is an amenable number.

22028285 is a deficient number, since it is larger than the sum of its proper divisors (4430851).

22028285 is a wasteful number, since it uses less digits than its factorization.

22028285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4203.

The product of its (nonzero) digits is 5120, while the sum is 29.

The square root of 22028285 is about 4693.4299824329. The cubic root of 22028285 is about 280.3239660062.

The spelling of 22028285 in words is "twenty-two million, twenty-eight thousand, two hundred eighty-five".