28544208 has 80 divisors (see below), whose sum is σ = 91946496. Its totient is φ = 7413120.

The previous prime is 28544203. The next prime is 28544209. The reversal of 28544208 is 80244582.

It is a happy number.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28544203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 166 + ... + 7557.

Almost surely, 2^28544208 is an apocalyptic number.

28544208 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 28544208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45973248).

28544208 is an abundant number, since it is smaller than the sum of its proper divisors (63402288).

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

28544208 is a wasteful number, since it uses less digits than its factorization.

28544208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7752 (or 7746 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 33.

The square root of 28544208 is about 5342.6779801893. The cubic root of 28544208 is about 305.6135923160.

The spelling of 28544208 in words is "twenty-eight million, five hundred forty-four thousand, two hundred eight".