30986130 has 96 divisors (see below), whose sum is σ = 87759936. Its totient is φ = 6980736.

The previous prime is 30986117. The next prime is 30986147. The reversal of 30986130 is 3168903.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 157192 + ... + 157388.

It is an arithmetic number, because the mean of its divisors is an integer number (914166).

Almost surely, 2^30986130 is an apocalyptic number.

30986130 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 30986130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43879968).

30986130 is an abundant number, since it is smaller than the sum of its proper divisors (56773806).

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

30986130 is a wasteful number, since it uses less digits than its factorization.

30986130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328 (or 321 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 30986130 is about 5566.5186607071. The cubic root of 30986130 is about 314.0912077666.

The spelling of 30986130 in words is "thirty million, nine hundred eighty-six thousand, one hundred thirty".