22204285 has 8 divisors (see below), whose sum is σ = 27564120. Its totient is φ = 17150784.

The previous prime is 22204253. The next prime is 22204307. The reversal of 22204285 is 58240222.

It can be written as a sum of positive squares in 4 ways, for example, as 6625476 + 15578809 = 2574^2 + 3947^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 22204285 - 2⁵ = 22204253 is a prime.

It is a super-2 number, since 2×22204285² = 986060544722450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76422 + ... + 76711.

It is an arithmetic number, because the mean of its divisors is an integer number (3445515).

Almost surely, 2^22204285 is an apocalyptic number.

It is an amenable number.

22204285 is a deficient number, since it is larger than the sum of its proper divisors (5359835).

22204285 is a wasteful number, since it uses less digits than its factorization.

22204285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153167.

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 22204285 is about 4712.1422941163. The cubic root of 22204285 is about 281.0685572097.

The spelling of 22204285 in words is "twenty-two million, two hundred four thousand, two hundred eighty-five".