28789754 has 12 divisors (see below), whose sum is σ = 50235354. Its totient is φ = 12338424.

The previous prime is 28789753. The next prime is 28789763. The reversal of 28789754 is 45798782.

It can be written as a sum of positive squares in only one way, i.e., 14554225 + 14235529 = 3815^2 + 3773^2 .

It is not an unprimeable number, because it can be changed into a prime (28789753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 146789 + ... + 146984.

Almost surely, 2^28789754 is an apocalyptic number.

28789754 is a deficient number, since it is larger than the sum of its proper divisors (21445600).

28789754 is a wasteful number, since it uses less digits than its factorization.

28789754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293789 (or 293782 counting only the distinct ones).

The product of its digits is 1128960, while the sum is 50.

The square root of 28789754 is about 5365.6084463926. The cubic root of 28789754 is about 306.4874186161.

Subtracting 28789754 from its reverse (45798782), we obtain a triangular number (17009028 = T₅₈₃₂).

The spelling of 28789754 in words is "twenty-eight million, seven hundred eighty-nine thousand, seven hundred fifty-four".