28063308 has 96 divisors (see below), whose sum is σ = 83292160. Its totient is φ = 7153920.

The previous prime is 28063303. The next prime is 28063309. The reversal of 28063308 is 80336082.

It is not an unprimeable number, because it can be changed into a prime (28063303) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33438 + ... + 34266.

Almost surely, 2^28063308 is an apocalyptic number.

28063308 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 28063308, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41646080).

28063308 is an abundant number, since it is smaller than the sum of its proper divisors (55228852).

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

28063308 is a wasteful number, since it uses less digits than its factorization.

28063308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 887 (or 885 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 28063308 is about 5297.4812883105. The cubic root of 28063308 is about 303.8875825104.

The spelling of 28063308 in words is "twenty-eight million, sixty-three thousand, three hundred eight".