30388500 has 96 divisors (see below), whose sum is σ = 98367360. Its totient is φ = 8100000.

The previous prime is 30388493. The next prime is 30388531. The reversal of 30388500 is 588303.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12375 + ... + 14625.

It is an arithmetic number, because the mean of its divisors is an integer number (1024660).

Almost surely, 2^30388500 is an apocalyptic number.

30388500 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 30388500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49183680).

30388500 is an abundant number, since it is smaller than the sum of its proper divisors (67978860).

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

30388500 is a wasteful number, since it uses less digits than its factorization.

30388500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2279 (or 2261 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 30388500 is about 5512.5765300810. The cubic root of 30388500 is about 312.0587906964.

The spelling of 30388500 in words is "thirty million, three hundred eighty-eight thousand, five hundred".