30680208 has 120 divisors (see below), whose sum is σ = 96049408. Its totient is φ = 9424512.

The previous prime is 30680207. The next prime is 30680233. The reversal of 30680208 is 80208603.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (30680201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50241 + ... + 50847.

Almost surely, 2^30680208 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 30680208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48024704).

30680208 is an abundant number, since it is smaller than the sum of its proper divisors (65369200).

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

30680208 is a wasteful number, since it uses less digits than its factorization.

30680208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643 (or 625 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 30680208 is about 5538.9717457304. The cubic root of 30680208 is about 313.0541268117.

The spelling of 30680208 in words is "thirty million, six hundred eighty thousand, two hundred eight".