28641008 has 40 divisors (see below), whose sum is σ = 60839856. Its totient is φ = 12953600.

The previous prime is 28640987. The next prime is 28641013. The reversal of 28641008 is 80014682.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61898 + ... + 62358.

Almost surely, 2^28641008 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 28641008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30419928).

28641008 is an abundant number, since it is smaller than the sum of its proper divisors (32198848).

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

28641008 is a wasteful number, since it uses less digits than its factorization.

28641008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 833 (or 827 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 28641008 is about 5351.7294400969. The cubic root of 28641008 is about 305.9586712805.

The spelling of 28641008 in words is "twenty-eight million, six hundred forty-one thousand, eight".