30085320 has 64 divisors (see below), whose sum is σ = 90720000. Its totient is φ = 7981568.

The previous prime is 30085313. The next prime is 30085331. The reversal of 30085320 is 2358003.

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, 28156 + ... + 29204.

It is an arithmetic number, because the mean of its divisors is an integer number (1417500).

Almost surely, 2^30085320 is an apocalyptic number.

30085320 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30085320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45360000).

30085320 is an abundant number, since it is smaller than the sum of its proper divisors (60634680).

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

30085320 is a wasteful number, since it uses less digits than its factorization.

30085320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1302 (or 1298 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 30085320 is about 5485.0086599749. The cubic root of 30085320 is about 311.0175374291.

The spelling of 30085320 in words is "thirty million, eighty-five thousand, three hundred twenty".