28112733 has 24 divisors (see below), whose sum is σ = 45059040. Its totient is φ = 16745760.

The previous prime is 28112729. The next prime is 28112741. The reversal of 28112733 is 33721182.

It is not a de Polignac number, because 28112733 - 2² = 28112729 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28112697 and 28112706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28112743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3435 + ... + 8247.

It is an arithmetic number, because the mean of its divisors is an integer number (1877460).

Almost surely, 2^28112733 is an apocalyptic number.

It is an amenable number.

28112733 is a deficient number, since it is larger than the sum of its proper divisors (16946307).

28112733 is a wasteful number, since it uses less digits than its factorization.

28112733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4889 (or 4886 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 28112733 is about 5302.1441889107. The cubic root of 28112733 is about 304.0658797953.

The spelling of 28112733 in words is "twenty-eight million, one hundred twelve thousand, seven hundred thirty-three".