28020033 has 16 divisors (see below), whose sum is σ = 41601600. Its totient is φ = 18639360.

The previous prime is 28020023. The next prime is 28020043. The reversal of 28020033 is 33002082.

It is an interprime number because it is at equal distance from previous prime (28020023) and next prime (28020043).

It is not a de Polignac number, because 28020033 - 2⁶ = 28019969 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28019988 and 28020015.

It is not an unprimeable number, because it can be changed into a prime (28020023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16498 + ... + 18116.

It is an arithmetic number, because the mean of its divisors is an integer number (2600100).

Almost surely, 2^28020033 is an apocalyptic number.

It is an amenable number.

28020033 is a deficient number, since it is larger than the sum of its proper divisors (13581567).

28020033 is a wasteful number, since it uses less digits than its factorization.

28020033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2269 (or 2263 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 28020033 is about 5293.3952242394. The cubic root of 28020033 is about 303.7312989553.

The spelling of 28020033 in words is "twenty-eight million, twenty thousand, thirty-three".