30338748 has 72 divisors (see below), whose sum is σ = 87325056. Its totient is φ = 8791200.

The previous prime is 30338747. The next prime is 30338773. The reversal of 30338748 is 84783303.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30338743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7443 + ... + 10773.

It is an arithmetic number, because the mean of its divisors is an integer number (1212848).

Almost surely, 2^30338748 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 30338748, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43662528).

30338748 is an abundant number, since it is smaller than the sum of its proper divisors (56986308).

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

30338748 is a wasteful number, since it uses less digits than its factorization.

30338748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3375 (or 3370 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 30338748 is about 5508.0620911533. The cubic root of 30338748 is about 311.8883969678. Note that the first 3 decimals are identical.

It can be divided in two parts, 3033 and 8748, that added together give a triangular number (11781 = T₁₅₃).

The spelling of 30338748 in words is "thirty million, three hundred thirty-eight thousand, seven hundred forty-eight".