28789518 has 16 divisors (see below), whose sum is σ = 59564880. Its totient is φ = 9265536.

The previous prime is 28789511. The next prime is 28789531. The reversal of 28789518 is 81598782.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28789511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82555 + ... + 82902.

It is an arithmetic number, because the mean of its divisors is an integer number (3722805).

Almost surely, 2^28789518 is an apocalyptic number.

28789518 is an abundant number, since it is smaller than the sum of its proper divisors (30775362).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28789518 is a wasteful number, since it uses less digits than its factorization.

28789518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165491.

The product of its digits is 322560, while the sum is 48.

The square root of 28789518 is about 5365.5864544335. The cubic root of 28789518 is about 306.4865811511.

The spelling of 28789518 in words is "twenty-eight million, seven hundred eighty-nine thousand, five hundred eighteen".