30838986 has 48 divisors (see below), whose sum is σ = 73052928. Its totient is φ = 9360000.

The previous prime is 30838963. The next prime is 30839023. The reversal of 30838986 is 68983803.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7861 + ... + 11111.

It is an arithmetic number, because the mean of its divisors is an integer number (1521936).

Almost surely, 2^30838986 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30838986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36526464).

30838986 is an abundant number, since it is smaller than the sum of its proper divisors (42213942).

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

30838986 is a wasteful number, since it uses less digits than its factorization.

30838986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3307 (or 3304 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 30838986 is about 5553.2860542205. The cubic root of 30838986 is about 313.5932431753.

The spelling of 30838986 in words is "thirty million, eight hundred thirty-eight thousand, nine hundred eighty-six".