28120753 has 8 divisors (see below), whose sum is σ = 28879488. Its totient is φ = 27366864.

The previous prime is 28120747. The next prime is 28120759. The reversal of 28120753 is 35702182.

It is an interprime number because it is at equal distance from previous prime (28120747) and next prime (28120759).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28120753 - 2¹⁷ = 27989681 is a prime.

It is a super-3 number, since 3×28120753³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (28120759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12600 + ... + 14662.

It is an arithmetic number, because the mean of its divisors is an integer number (3609936).

Almost surely, 2^28120753 is an apocalyptic number.

It is an amenable number.

28120753 is a deficient number, since it is larger than the sum of its proper divisors (758735).

28120753 is a wasteful number, since it uses less digits than its factorization.

28120753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2423.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 28120753 is about 5302.9004327820. The cubic root of 28120753 is about 304.0947916826.

The spelling of 28120753 in words is "twenty-eight million, one hundred twenty thousand, seven hundred fifty-three".