28031033 has 2 divisors, whose sum is σ = 28031034. Its totient is φ = 28031032.

The previous prime is 28031021. The next prime is 28031039. The reversal of 28031033 is 33013082.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20457529 + 7573504 = 4523^2 + 2752^2 .

It is a cyclic number.

It is not a de Polignac number, because 28031033 - 2¹² = 28026937 is a prime.

It is a super-2 number, since 2×28031033² = 1571477622094178, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28030996 and 28031014.

It is not a weakly prime, because it can be changed into another prime (28031039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14015516 + 14015517.

It is an arithmetic number, because the mean of its divisors is an integer number (14015517).

Almost surely, 2^28031033 is an apocalyptic number.

It is an amenable number.

28031033 is a deficient number, since it is larger than the sum of its proper divisors (1).

28031033 is an equidigital number, since it uses as much as digits as its factorization.

28031033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 28031033 is about 5294.4341529572. The cubic root of 28031033 is about 303.7710396554.

It can be divided in two parts, 280 and 31033, that added together give a palindrome (31313).

The spelling of 28031033 in words is "twenty-eight million, thirty-one thousand, thirty-three".