28789064 has 16 divisors (see below), whose sum is σ = 54039420. Its totient is φ = 14378560.

The previous prime is 28789063. The next prime is 28789067. The reversal of 28789064 is 46098782.

It can be written as a sum of positive squares in 2 ways, for example, as 21808900 + 6980164 = 4670^2 + 2642^2 .

It is not an unprimeable number, because it can be changed into a prime (28789063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9674 + ... + 12294.

Almost surely, 2^28789064 is an apocalyptic number.

It is an amenable number.

28789064 is a deficient number, since it is larger than the sum of its proper divisors (25250356).

28789064 is a wasteful number, since it uses less digits than its factorization.

28789064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4000 (or 3996 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 28789064 is about 5365.5441476145. The cubic root of 28789064 is about 306.4849700828.

The spelling of 28789064 in words is "twenty-eight million, seven hundred eighty-nine thousand, sixty-four".