10728889 has 2 divisors, whose sum is σ = 10728890. Its totient is φ = 10728888.

The previous prime is 10728877. The next prime is 10728899. The reversal of 10728889 is 98882701.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8791225 + 1937664 = 2965^2 + 1392^2 .

It is a cyclic number.

It is not a de Polignac number, because 10728889 - 2⁵ = 10728857 is a prime.

It is not a weakly prime, because it can be changed into another prime (10728899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5364444 + 5364445.

It is an arithmetic number, because the mean of its divisors is an integer number (5364445).

Almost surely, 2^10728889 is an apocalyptic number.

It is an amenable number.

10728889 is a deficient number, since it is larger than the sum of its proper divisors (1).

10728889 is an equidigital number, since it uses as much as digits as its factorization.

10728889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64512, while the sum is 43.

The square root of 10728889 is about 3275.4982827045. The cubic root of 10728889 is about 220.5556820382. Note that the first 3 decimals are identical.

The spelling of 10728889 in words is "ten million, seven hundred twenty-eight thousand, eight hundred eighty-nine".