30047808 has 112 divisors (see below), whose sum is σ = 92334080. Its totient is φ = 8446464.

The previous prime is 30047791. The next prime is 30047813. The reversal of 30047808 is 80874003.

It is a tau number, because it is divible by the number of its divisors (112).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106035 + ... + 106317.

Almost surely, 2^30047808 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 30047808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46167040).

30047808 is an abundant number, since it is smaller than the sum of its proper divisors (62286272).

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

30047808 is a wasteful number, since it uses less digits than its factorization.

30047808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384 (or 374 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 30047808 is about 5481.5880910554. The cubic root of 30047808 is about 310.8882191858. Note that the first 3 decimals are identical.

The spelling of 30047808 in words is "thirty million, forty-seven thousand, eight hundred eight".