28247163 has 16 divisors (see below), whose sum is σ = 43357440. Its totient is φ = 16023456.

The previous prime is 28247119. The next prime is 28247201. The reversal of 28247163 is 36174282.

It is not a de Polignac number, because 28247163 - 2¹² = 28243067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28247963) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1920 + ... + 7757.

It is an arithmetic number, because the mean of its divisors is an integer number (2709840).

Almost surely, 2^28247163 is an apocalyptic number.

28247163 is a deficient number, since it is larger than the sum of its proper divisors (15110277).

28247163 is a wasteful number, since it uses less digits than its factorization.

28247163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9826.

The product of its digits is 16128, while the sum is 33.

The square root of 28247163 is about 5314.8060171562. The cubic root of 28247163 is about 304.5497719822.

The spelling of 28247163 in words is "twenty-eight million, two hundred forty-seven thousand, one hundred sixty-three".