30685230 has 80 divisors (see below), whose sum is σ = 84523824. Its totient is φ = 7983360.

The previous prime is 30685217. The next prime is 30685253. The reversal of 30685230 is 3258603.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 30685194 and 30685203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 34390 + ... + 35270.

Almost surely, 2^30685230 is an apocalyptic number.

30685230 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 30685230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42261912).

30685230 is an abundant number, since it is smaller than the sum of its proper divisors (53838594).

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

30685230 is a wasteful number, since it uses less digits than its factorization.

30685230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 943 (or 934 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 30685230 is about 5539.4250604192. The cubic root of 30685230 is about 313.0712070094.

The spelling of 30685230 in words is "thirty million, six hundred eighty-five thousand, two hundred thirty".