28632533 has 2 divisors, whose sum is σ = 28632534. Its totient is φ = 28632532.

The previous prime is 28632529. The next prime is 28632559. The reversal of 28632533 is 33523682.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21003889 + 7628644 = 4583^2 + 2762^2 .

It is a cyclic number.

It is not a de Polignac number, because 28632533 - 2² = 28632529 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28632533.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28632503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14316266 + 14316267.

It is an arithmetic number, because the mean of its divisors is an integer number (14316267).

Almost surely, 2^28632533 is an apocalyptic number.

It is an amenable number.

28632533 is a deficient number, since it is larger than the sum of its proper divisors (1).

28632533 is an equidigital number, since it uses as much as digits as its factorization.

28632533 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 32.

The square root of 28632533 is about 5350.9375813964. The cubic root of 28632533 is about 305.9284901321.

The spelling of 28632533 in words is "twenty-eight million, six hundred thirty-two thousand, five hundred thirty-three".