30995328 has 128 divisors (see below), whose sum is σ = 101445120. Its totient is φ = 8165376.

The previous prime is 30995311. The next prime is 30995347. The reversal of 30995328 is 82359903.

It is a tau number, because it is divible by the number of its divisors (128).

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34501 + ... + 35387.

It is an arithmetic number, because the mean of its divisors is an integer number (792540).

Almost surely, 2^30995328 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 30995328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50722560).

30995328 is an abundant number, since it is smaller than the sum of its proper divisors (70449792).

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

30995328 is a wasteful number, since it uses less digits than its factorization.

30995328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 924 (or 912 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 39.

The square root of 30995328 is about 5567.3447890354. The cubic root of 30995328 is about 314.1222832308.

The spelling of 30995328 in words is "thirty million, nine hundred ninety-five thousand, three hundred twenty-eight".