30039930 has 128 divisors (see below), whose sum is σ = 85800960. Its totient is φ = 7464960.

The previous prime is 30039913. The next prime is 30039943. The reversal of 30039930 is 3993003.

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 = 30039894 and 30039903.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 309642 + ... + 309738.

It is an arithmetic number, because the mean of its divisors is an integer number (670320).

Almost surely, 2^30039930 is an apocalyptic number.

30039930 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 30039930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42900480).

30039930 is an abundant number, since it is smaller than the sum of its proper divisors (55761030).

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

30039930 is a wasteful number, since it uses less digits than its factorization.

30039930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181 (or 175 counting only the distinct ones).

The product of its (nonzero) digits is 2187, while the sum is 27.

The square root of 30039930 is about 5480.8694565735. The cubic root of 30039930 is about 310.8610470266.

The spelling of 30039930 in words is "thirty million, thirty-nine thousand, nine hundred thirty".