30385020 has 24 divisors (see below), whose sum is σ = 85078224. Its totient is φ = 8102656.

The previous prime is 30385007. The next prime is 30385021. The reversal of 30385020 is 2058303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30385021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 253149 + ... + 253268.

It is an arithmetic number, because the mean of its divisors is an integer number (3544926).

Almost surely, 2^30385020 is an apocalyptic number.

30385020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30385020 is an abundant number, since it is smaller than the sum of its proper divisors (54693204).

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

30385020 is a wasteful number, since it uses less digits than its factorization.

30385020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506429 (or 506427 counting only the distinct ones).

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

The square root of 30385020 is about 5512.2608791675. The cubic root of 30385020 is about 312.0468782290.

The spelling of 30385020 in words is "thirty million, three hundred eighty-five thousand, twenty".