30938208 has 72 divisors (see below), whose sum is σ = 94486392. Its totient is φ = 8838144.

The previous prime is 30938207. The next prime is 30938221. The reversal of 30938208 is 80283903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30938207) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1416 + ... + 7992.

It is an arithmetic number, because the mean of its divisors is an integer number (1312311).

Almost surely, 2^30938208 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 30938208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47243196).

30938208 is an abundant number, since it is smaller than the sum of its proper divisors (63548184).

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

30938208 is a wasteful number, since it uses less digits than its factorization.

30938208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6604 (or 6589 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 30938208 is about 5562.2125094246. The cubic root of 30938208 is about 313.9292036152.

Adding to 30938208 its reverse (80283903), we get a palindrome (111222111).

It can be divided in two parts, 3093820 and 8, that added together give a triangular number (3093828 = T₂₄₈₇).

The spelling of 30938208 in words is "thirty million, nine hundred thirty-eight thousand, two hundred eight".