28075733 has 4 divisors (see below), whose sum is σ = 32086560. Its totient is φ = 24064908.

The previous prime is 28075717. The next prime is 28075753. The reversal of 28075733 is 33757082.

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 not a de Polignac number, because 28075733 - 2⁴ = 28075717 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28075693 and 28075702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28075703) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2005403 + ... + 2005416.

It is an arithmetic number, because the mean of its divisors is an integer number (8021640).

Almost surely, 2^28075733 is an apocalyptic number.

It is an amenable number.

28075733 is a deficient number, since it is larger than the sum of its proper divisors (4010827).

28075733 is an equidigital number, since it uses as much as digits as its factorization.

28075733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4010826.

The product of its (nonzero) digits is 35280, while the sum is 35.

The square root of 28075733 is about 5298.6538856581. The cubic root of 28075733 is about 303.9324245286.

The spelling of 28075733 in words is "twenty-eight million, seventy-five thousand, seven hundred thirty-three".