30256688 has 80 divisors (see below), whose sum is σ = 74995200. Its totient is φ = 11481600.

The previous prime is 30256679. The next prime is 30256691. The reversal of 30256688 is 88665203.

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 15 ways as a sum of consecutive naturals, for example, 50213 + ... + 50811.

It is an arithmetic number, because the mean of its divisors is an integer number (937440).

Almost surely, 2^30256688 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 30256688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37497600).

30256688 is an abundant number, since it is smaller than the sum of its proper divisors (44738512).

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

30256688 is a wasteful number, since it uses less digits than its factorization.

30256688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666 (or 660 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 30256688 is about 5500.6079663979. The cubic root of 30256688 is about 311.6069453219.

The spelling of 30256688 in words is "thirty million, two hundred fifty-six thousand, six hundred eighty-eight".