28263112 has 32 divisors (see below), whose sum is σ = 56920320. Its totient is φ = 13108480.

The previous prime is 28263091. The next prime is 28263149. The reversal of 28263112 is 21136282.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8193 + ... + 11119.

It is an arithmetic number, because the mean of its divisors is an integer number (1778760).

Almost surely, 2^28263112 is an apocalyptic number.

It is an amenable number.

28263112 is an abundant number, since it is smaller than the sum of its proper divisors (28657208).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28263112 is a wasteful number, since it uses less digits than its factorization.

28263112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3021 (or 3017 counting only the distinct ones).

The product of its digits is 1152, while the sum is 25.

The square root of 28263112 is about 5316.3062364766. The cubic root of 28263112 is about 304.6070798073.

Adding to 28263112 its reverse (21136282), we get a palindrome (49399394).

The spelling of 28263112 in words is "twenty-eight million, two hundred sixty-three thousand, one hundred twelve".