28282033 has 8 divisors (see below), whose sum is σ = 32249448. Its totient is φ = 24570624.

The previous prime is 28282021. The next prime is 28282043. The reversal of 28282033 is 33028282.

It can be written as a sum of positive squares in 4 ways, for example, as 8363664 + 19918369 = 2892^2 + 4463^2 .

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

It is not a de Polignac number, because 28282033 - 2¹³ = 28273841 is a prime.

It is a super-2 number, since 2×28282033² = 1599746781226178, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28281992 and 28282010.

It is not an unprimeable number, because it can be changed into a prime (28282043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63766 + ... + 64207.

It is an arithmetic number, because the mean of its divisors is an integer number (4031181).

Almost surely, 2^28282033 is an apocalyptic number.

It is an amenable number.

28282033 is a deficient number, since it is larger than the sum of its proper divisors (3967415).

28282033 is a wasteful number, since it uses less digits than its factorization.

28282033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128003.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 28282033 is about 5318.0854637736. The cubic root of 28282033 is about 304.6750386470.

The spelling of 28282033 in words is "twenty-eight million, two hundred eighty-two thousand, thirty-three".