28564104 has 64 divisors (see below), whose sum is σ = 73656000. Its totient is φ = 9227520.

The previous prime is 28564103. The next prime is 28564117. The reversal of 28564104 is 40146582.

It is not an unprimeable number, because it can be changed into a prime (28564103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 159487 + ... + 159665.

It is an arithmetic number, because the mean of its divisors is an integer number (1150875).

Almost surely, 2^28564104 is an apocalyptic number.

28564104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28564104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36828000).

28564104 is an abundant number, since it is smaller than the sum of its proper divisors (45091896).

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

28564104 is a wasteful number, since it uses less digits than its factorization.

28564104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358 (or 354 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 28564104 is about 5344.5396434118. The cubic root of 28564104 is about 305.6845825011.

The spelling of 28564104 in words is "twenty-eight million, five hundred sixty-four thousand, one hundred four".