28785114 has 48 divisors (see below), whose sum is σ = 69526080. Its totient is φ = 8553600.

The previous prime is 28785091. The next prime is 28785179. The reversal of 28785114 is 41158782.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3339 + ... + 8289.

It is an arithmetic number, because the mean of its divisors is an integer number (1448460).

Almost surely, 2^28785114 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28785114, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34763040).

28785114 is an abundant number, since it is smaller than the sum of its proper divisors (40740966).

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

28785114 is a wasteful number, since it uses less digits than its factorization.

28785114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4995 (or 4992 counting only the distinct ones).

The product of its digits is 17920, while the sum is 36.

The square root of 28785114 is about 5365.1760455739. The cubic root of 28785114 is about 306.4709523641.

Subtracting from 28785114 its sum of digits (36), we obtain a triangular number (28785078 = T₇₅₈₇).

The spelling of 28785114 in words is "twenty-eight million, seven hundred eighty-five thousand, one hundred fourteen".