28736833 has 2 divisors, whose sum is σ = 28736834. Its totient is φ = 28736832.

The previous prime is 28736801. The next prime is 28736837. The reversal of 28736833 is 33863782.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16744464 + 11992369 = 4092^2 + 3463^2 .

It is a cyclic number.

It is not a de Polignac number, because 28736833 - 2⁵ = 28736801 is a prime.

It is not a weakly prime, because it can be changed into another prime (28736837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14368416 + 14368417.

It is an arithmetic number, because the mean of its divisors is an integer number (14368417).

Almost surely, 2^28736833 is an apocalyptic number.

It is an amenable number.

28736833 is a deficient number, since it is larger than the sum of its proper divisors (1).

28736833 is an equidigital number, since it uses as much as digits as its factorization.

28736833 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 40.

The square root of 28736833 is about 5360.6746776875. The cubic root of 28736833 is about 306.2995095300.

The spelling of 28736833 in words is "twenty-eight million, seven hundred thirty-six thousand, eight hundred thirty-three".