28556704 has 48 divisors (see below), whose sum is σ = 63334656. Its totient is φ = 12556800.

The previous prime is 28556701. The next prime is 28556707. The reversal of 28556704 is 40765582.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28556701) and next prime (28556707).

It is not an unprimeable number, because it can be changed into a prime (28556701) 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, 9604 + ... + 12220.

It is an arithmetic number, because the mean of its divisors is an integer number (1319472).

Almost surely, 2^28556704 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28556704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31667328).

28556704 is an abundant number, since it is smaller than the sum of its proper divisors (34777952).

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

28556704 is a wasteful number, since it uses less digits than its factorization.

28556704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2669 (or 2661 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 37.

The square root of 28556704 is about 5343.8473032077. The cubic root of 28556704 is about 305.6581826850.

It can be divided in two parts, 2855 and 6704, that added together give a palindrome (9559).

The spelling of 28556704 in words is "twenty-eight million, five hundred fifty-six thousand, seven hundred four".