28000753 has 4 divisors (see below), whose sum is σ = 30546288. Its totient is φ = 25455220.

The previous prime is 28000741. The next prime is 28000757. The reversal of 28000753 is 35700082.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28000753 - 2²¹ = 25903601 is a prime.

It is a super-3 number, since 3×28000753³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28000757) 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 3 ways as a sum of consecutive naturals, for example, 1272751 + ... + 1272772.

It is an arithmetic number, because the mean of its divisors is an integer number (7636572).

Almost surely, 2^28000753 is an apocalyptic number.

It is an amenable number.

28000753 is a deficient number, since it is larger than the sum of its proper divisors (2545535).

28000753 is a wasteful number, since it uses less digits than its factorization.

28000753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2545534.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 28000753 is about 5291.5737734629. The cubic root of 28000753 is about 303.6616192483.

The spelling of 28000753 in words is "twenty-eight million, seven hundred fifty-three", and thus it is an aban number.