28831033 has 12 divisors (see below), whose sum is σ = 36218560. Its totient is φ = 22465080.

The previous prime is 28831007. The next prime is 28831073. The reversal of 28831033 is 33013882.

It is a de Polignac number, because none of the positive numbers 2^k-28831033 is a prime.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 28830992 and 28831010.

It is not an unprimeable number, because it can be changed into a prime (28831073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16173 + ... + 17866.

Almost surely, 2^28831033 is an apocalyptic number.

It is an amenable number.

28831033 is a deficient number, since it is larger than the sum of its proper divisors (7387527).

28831033 is a wasteful number, since it uses less digits than its factorization.

28831033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34068 (or 34057 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 28831033 is about 5369.4536966064. The cubic root of 28831033 is about 306.6338301063.

It can be divided in two parts, 2883 and 1033, that added together give a triangular number (3916 = T₈₈).

The spelling of 28831033 in words is "twenty-eight million, eight hundred thirty-one thousand, thirty-three".