28436222 has 8 divisors (see below), whose sum is σ = 43562016. Its totient is φ = 13915552.

The previous prime is 28436209. The next prime is 28436231. The reversal of 28436222 is 22263482.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151163 + ... + 151350.

It is an arithmetic number, because the mean of its divisors is an integer number (5445252).

Almost surely, 2^28436222 is an apocalyptic number.

28436222 is a deficient number, since it is larger than the sum of its proper divisors (15125794).

28436222 is a wasteful number, since it uses less digits than its factorization.

28436222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302562.

The product of its digits is 9216, while the sum is 29.

The square root of 28436222 is about 5332.5624234508. The cubic root of 28436222 is about 305.2277149215.

The spelling of 28436222 in words is "twenty-eight million, four hundred thirty-six thousand, two hundred twenty-two".