28037533 has 2 divisors, whose sum is σ = 28037534. Its totient is φ = 28037532.

The previous prime is 28037509. The next prime is 28037543. The reversal of 28037533 is 33573082.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23551609 + 4485924 = 4853^2 + 2118^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28037533 is a prime.

It is a super-2 number, since 2×28037533² = 1572206513452178, which contains 22 as substring.

It is equal to p_1743682 and since 28037533 and 1743682 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 28037495 and 28037504.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28037543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14018766 + 14018767.

It is an arithmetic number, because the mean of its divisors is an integer number (14018767).

Almost surely, 2^28037533 is an apocalyptic number.

It is an amenable number.

28037533 is a deficient number, since it is larger than the sum of its proper divisors (1).

28037533 is an equidigital number, since it uses as much as digits as its factorization.

28037533 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 28037533 is about 5295.0479695655. The cubic root of 28037533 is about 303.7945179096.

The spelling of 28037533 in words is "twenty-eight million, thirty-seven thousand, five hundred thirty-three".