30733388 has 36 divisors (see below), whose sum is σ = 64733760. Its totient is φ = 12714912.

The previous prime is 30733363. The next prime is 30733453. The reversal of 30733388 is 88333703.

It is a super-2 number, since 2×30733388² = 1889082275917088, which contains 22 as substring.

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 11 ways as a sum of consecutive naturals, for example, 2981 + ... + 8387.

It is an arithmetic number, because the mean of its divisors is an integer number (1798160).

Almost surely, 2^30733388 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 30733388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32366880).

30733388 is an abundant number, since it is smaller than the sum of its proper divisors (34000372).

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

30733388 is a wasteful number, since it uses less digits than its factorization.

30733388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5454 (or 5445 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 30733388 is about 5543.7701972575. The cubic root of 30733388 is about 313.2349014289.

The spelling of 30733388 in words is "thirty million, seven hundred thirty-three thousand, three hundred eighty-eight".