28081753 has 32 divisors (see below), whose sum is σ = 35840000. Its totient is φ = 21908880.

The previous prime is 28081747. The next prime is 28081769. The reversal of 28081753 is 35718082.

It is a de Polignac number, because none of the positive numbers 2^k-28081753 is a prime.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (28081723) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 201958 + ... + 202096.

It is an arithmetic number, because the mean of its divisors is an integer number (1120000).

Almost surely, 2^28081753 is an apocalyptic number.

It is an amenable number.

28081753 is a deficient number, since it is larger than the sum of its proper divisors (7758247).

28081753 is a wasteful number, since it uses less digits than its factorization.

28081753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210 (or 196 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 28081753 is about 5299.2219240187. The cubic root of 28081753 is about 303.9541460445.

The spelling of 28081753 in words is "twenty-eight million, eighty-one thousand, seven hundred fifty-three".