28261112 has 32 divisors (see below), whose sum is σ = 60324480. Its totient is φ = 12286560.

The previous prime is 28261087. The next prime is 28261133. The reversal of 28261112 is 21116282.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

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, 4958 + ... + 9005.

It is an arithmetic number, because the mean of its divisors is an integer number (1885140).

Almost surely, 2^28261112 is an apocalyptic number.

28261112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

28261112 is an abundant number, since it is smaller than the sum of its proper divisors (32063368).

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

28261112 is a wasteful number, since it uses less digits than its factorization.

28261112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14003 (or 13999 counting only the distinct ones).

The product of its digits is 384, while the sum is 23.

The square root of 28261112 is about 5316.1181326227. The cubic root of 28261112 is about 304.5998946050.

Adding to 28261112 its reverse (21116282), we get a palindrome (49377394).

The spelling of 28261112 in words is "twenty-eight million, two hundred sixty-one thousand, one hundred twelve".