28286270 has 8 divisors (see below), whose sum is σ = 50915304. Its totient is φ = 11314504.

The previous prime is 28286239. The next prime is 28286287. The reversal of 28286270 is 7268282.

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

It is a super-2 number, since 2×28286270² = 1600226141025800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28286270.

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, 1414304 + ... + 1414323.

It is an arithmetic number, because the mean of its divisors is an integer number (6364413).

Almost surely, 2^28286270 is an apocalyptic number.

28286270 is a deficient number, since it is larger than the sum of its proper divisors (22629034).

28286270 is a wasteful number, since it uses less digits than its factorization.

28286270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2828634.

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 28286270 is about 5318.4838064997. The cubic root of 28286270 is about 304.6902525896.

The spelling of 28286270 in words is "twenty-eight million, two hundred eighty-six thousand, two hundred seventy".