28811112 has 32 divisors (see below), whose sum is σ = 78576480. Its totient is φ = 8730560.

The previous prime is 28811099. The next prime is 28811113. The reversal of 28811112 is 21111882.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (28811113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54303 + ... + 54830.

It is an arithmetic number, because the mean of its divisors is an integer number (2455515).

Almost surely, 2^28811112 is an apocalyptic number.

28811112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

28811112 is an abundant number, since it is smaller than the sum of its proper divisors (49765368).

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

28811112 is a wasteful number, since it uses less digits than its factorization.

28811112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109153 (or 109149 counting only the distinct ones).

The product of its digits is 256, while the sum is 24.

The square root of 28811112 is about 5367.5983456291. The cubic root of 28811112 is about 306.5631902514.

Adding to 28811112 its reverse (21111882), we get a palindrome (49922994).

It can be divided in two parts, 2881 and 1112, that added together give a palindrome (3993).

The spelling of 28811112 in words is "twenty-eight million, eight hundred eleven thousand, one hundred twelve".