28062287 has 8 divisors (see below), whose sum is σ = 30747600. Its totient is φ = 25399360.

The previous prime is 28062283. The next prime is 28062289. The reversal of 28062287 is 78226082.

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 28062287 - 2² = 28062283 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 (28062283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2912 + ... + 8037.

It is an arithmetic number, because the mean of its divisors is an integer number (3843450).

Almost surely, 2^28062287 is an apocalyptic number.

28062287 is a deficient number, since it is larger than the sum of its proper divisors (2685313).

28062287 is a wasteful number, since it uses less digits than its factorization.

28062287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11193.

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

The square root of 28062287 is about 5297.3849208831. The cubic root of 28062287 is about 303.8838971171.

The spelling of 28062287 in words is "twenty-eight million, sixty-two thousand, two hundred eighty-seven".