30680352 has 72 divisors (see below), whose sum is σ = 87783696. Its totient is φ = 10164096.

The previous prime is 30680333. The next prime is 30680357. The reversal of 30680352 is 25308603.

30680352 is a `hidden beast` number, since 306 + 8 + 0 + 352 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is not an unprimeable number, because it can be changed into a prime (30680357) 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, 88243 + ... + 88589.

It is an arithmetic number, because the mean of its divisors is an integer number (1219218).

Almost surely, 2^30680352 is an apocalyptic number.

30680352 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30680352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43891848).

30680352 is an abundant number, since it is smaller than the sum of its proper divisors (57103344).

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

30680352 is a wasteful number, since it uses less digits than its factorization.

30680352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670 (or 659 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 30680352 is about 5538.9847445177. The cubic root of 30680352 is about 313.0546165924.

Adding to 30680352 its reverse (25308603), we get a palindrome (55988955).

The spelling of 30680352 in words is "thirty million, six hundred eighty thousand, three hundred fifty-two".