28267853 has 4 divisors (see below), whose sum is σ = 28286460. Its totient is φ = 28249248.

The previous prime is 28267843. The next prime is 28267861. The reversal of 28267853 is 35876282.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12411529 + 15856324 = 3523^2 + 3982^2 .

It is a cyclic number.

It is not a de Polignac number, because 28267853 - 2¹⁰ = 28266829 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28267853.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28267843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6800 + ... + 10137.

It is an arithmetic number, because the mean of its divisors is an integer number (7071615).

Almost surely, 2^28267853 is an apocalyptic number.

It is an amenable number.

28267853 is a deficient number, since it is larger than the sum of its proper divisors (18607).

28267853 is a wasteful number, since it uses less digits than its factorization.

28267853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18606.

The product of its digits is 161280, while the sum is 41.

The square root of 28267853 is about 5316.7521100762. The cubic root of 28267853 is about 304.6241109753.

The spelling of 28267853 in words is "twenty-eight million, two hundred sixty-seven thousand, eight hundred fifty-three".