28204008 has 96 divisors (see below), whose sum is σ = 84952800. Its totient is φ = 7771008.

The previous prime is 28203997. The next prime is 28204019. The reversal of 28204008 is 80040282.

It is an interprime number because it is at equal distance from previous prime (28203997) and next prime (28204019).

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 33691 + ... + 34517.

It is an arithmetic number, because the mean of its divisors is an integer number (884925).

Almost surely, 2^28204008 is an apocalyptic number.

28204008 is a gapful number since it is divisible by the number (28) 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 28204008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42476400).

28204008 is an abundant number, since it is smaller than the sum of its proper divisors (56748792).

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

28204008 is a wasteful number, since it uses less digits than its factorization.

28204008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 879 (or 868 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 24.

The square root of 28204008 is about 5310.7445805650. The cubic root of 28204008 is about 304.3945995359.

The spelling of 28204008 in words is "twenty-eight million, two hundred four thousand, eight".