30028908 has 96 divisors (see below), whose sum is σ = 87381504. Its totient is φ = 7815168.

The previous prime is 30028903. The next prime is 30028913. The reversal of 30028908 is 80982003.

It is an interprime number because it is at equal distance from previous prime (30028903) and next prime (30028913).

It is not an unprimeable number, because it can be changed into a prime (30028903) 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, 116716 + ... + 116972.

It is an arithmetic number, because the mean of its divisors is an integer number (910224).

Almost surely, 2^30028908 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 30028908, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43690752).

30028908 is an abundant number, since it is smaller than the sum of its proper divisors (57352596).

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

30028908 is a wasteful number, since it uses less digits than its factorization.

30028908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391 (or 389 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 30028908 is about 5479.8638669222. The cubic root of 30028908 is about 310.8230228635.

The spelling of 30028908 in words is "thirty million, twenty-eight thousand, nine hundred eight".