28959533 has 2 divisors, whose sum is σ = 28959534. Its totient is φ = 28959532.

The previous prime is 28959523. The next prime is 28959563. The reversal of 28959533 is 33595982.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21921124 + 7038409 = 4682^2 + 2653^2 .

It is a cyclic number.

It is not a de Polignac number, because 28959533 - 2¹⁰ = 28958509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28959503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14479766 + 14479767.

It is an arithmetic number, because the mean of its divisors is an integer number (14479767).

Almost surely, 2^28959533 is an apocalyptic number.

It is an amenable number.

28959533 is a deficient number, since it is larger than the sum of its proper divisors (1).

28959533 is an equidigital number, since it uses as much as digits as its factorization.

28959533 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 291600, while the sum is 44.

The square root of 28959533 is about 5381.4062288588. The cubic root of 28959533 is about 307.0887109372.

It can be divided in two parts, 28959 and 533, that added together give a palindrome (29492).

The spelling of 28959533 in words is "twenty-eight million, nine hundred fifty-nine thousand, five hundred thirty-three".