30385392 has 80 divisors (see below), whose sum is σ = 86780160. Its totient is φ = 9112576.

The previous prime is 30385357. The next prime is 30385393. The reversal of 30385392 is 29358303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30385393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17959 + ... + 19577.

It is an arithmetic number, because the mean of its divisors is an integer number (1084752).

Almost surely, 2^30385392 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30385392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43390080).

30385392 is an abundant number, since it is smaller than the sum of its proper divisors (56394768).

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

30385392 is a wasteful number, since it uses less digits than its factorization.

30385392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1670 (or 1664 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 33.

The square root of 30385392 is about 5512.2946220245. The cubic root of 30385392 is about 312.0481516741.

The spelling of 30385392 in words is "thirty million, three hundred eighty-five thousand, three hundred ninety-two".