30894528 has 112 divisors (see below), whose sum is σ = 94674944. Its totient is φ = 8709120.

The previous prime is 30894517. The next prime is 30894533. The reversal of 30894528 is 82549803.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (112).

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 15 ways as a sum of consecutive naturals, for example, 170598 + ... + 170778.

It is an arithmetic number, because the mean of its divisors is an integer number (845312).

Almost surely, 2^30894528 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 30894528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47337472).

30894528 is an abundant number, since it is smaller than the sum of its proper divisors (63780416).

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

30894528 is a wasteful number, since it uses less digits than its factorization.

30894528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330 (or 320 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 30894528 is about 5558.2846274728. The cubic root of 30894528 is about 313.7813940851.

The spelling of 30894528 in words is "thirty million, eight hundred ninety-four thousand, five hundred twenty-eight".