28339308 has 60 divisors (see below), whose sum is σ = 75701472. Its totient is φ = 9240480.

The previous prime is 28339307. The next prime is 28339309. The reversal of 28339308 is 80393382.

It is an interprime number because it is at equal distance from previous prime (28339307) and next prime (28339309).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (28339307) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 14298 + ... + 16158.

Almost surely, 2^28339308 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 28339308, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37850736).

28339308 is an abundant number, since it is smaller than the sum of its proper divisors (47362164).

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

28339308 is a wasteful number, since it uses less digits than its factorization.

28339308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1924 (or 1913 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 28339308 is about 5323.4676668502. The cubic root of 28339308 is about 304.8805695619.

The spelling of 28339308 in words is "twenty-eight million, three hundred thirty-nine thousand, three hundred eight".