28804734 has 48 divisors (see below), whose sum is σ = 73976448. Its totient is φ = 8228952.

The previous prime is 28804709. The next prime is 28804739. The reversal of 28804734 is 43740882.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28804739) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 832 + ... + 7635.

It is an arithmetic number, because the mean of its divisors is an integer number (1541176).

Almost surely, 2^28804734 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28804734, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36988224).

28804734 is an abundant number, since it is smaller than the sum of its proper divisors (45171714).

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

28804734 is an equidigital number, since it uses as much as digits as its factorization.

28804734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8491 (or 8479 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The square root of 28804734 is about 5367.0041922846. The cubic root of 28804734 is about 306.5405669857.

The spelling of 28804734 in words is "twenty-eight million, eight hundred four thousand, seven hundred thirty-four".