30533916 has 96 divisors (see below), whose sum is σ = 84994560. Its totient is φ = 8352000.

The previous prime is 30533911. The next prime is 30533927. The reversal of 30533916 is 61933503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30533911) by changing a digit.

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, 302266 + ... + 302366.

It is an arithmetic number, because the mean of its divisors is an integer number (885360).

Almost surely, 2^30533916 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 30533916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42497280).

30533916 is an abundant number, since it is smaller than the sum of its proper divisors (54460644).

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

30533916 is a wasteful number, since it uses less digits than its factorization.

30533916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235 (or 233 counting only the distinct ones).

The product of its (nonzero) digits is 7290, while the sum is 30.

The square root of 30533916 is about 5525.7502658010. The cubic root of 30533916 is about 312.5557566646. Note that the first 3 decimals are identical.

The spelling of 30533916 in words is "thirty million, five hundred thirty-three thousand, nine hundred sixteen".