30512328 has 192 divisors, whose sum is σ = 102144000. Its totient is φ = 7413120.

The previous prime is 30512311. The next prime is 30512333. The reversal of 30512328 is 82321503.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 30512298 and 30512307.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 386193 + ... + 386271.

It is an arithmetic number, because the mean of its divisors is an integer number (532000).

Almost surely, 2^30512328 is an apocalyptic number.

30512328 is a gapful number since it is divisible by the number (38) 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 30512328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51072000).

30512328 is an abundant number, since it is smaller than the sum of its proper divisors (71631672).

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

30512328 is a wasteful number, since it uses less digits than its factorization.

30512328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136 (or 121 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 30512328 is about 5523.7965205101. The cubic root of 30512328 is about 312.4820785456.

The spelling of 30512328 in words is "thirty million, five hundred twelve thousand, three hundred twenty-eight".