30691200 has 192 divisors, whose sum is σ = 106243200. Its totient is φ = 7772160.

The previous prime is 30691189. The next prime is 30691229. The reversal of 30691200 is 219603.

It is a tau number, because it is divible by the number of its divisors (192).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 220731 + ... + 220869.

It is an arithmetic number, because the mean of its divisors is an integer number (553350).

Almost surely, 2^30691200 is an apocalyptic number.

30691200 is a gapful number since it is divisible by the number (30) 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 30691200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53121600).

30691200 is an abundant number, since it is smaller than the sum of its proper divisors (75552000).

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

30691200 is a wasteful number, since it uses less digits than its factorization.

30691200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189 (or 172 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 30691200 is about 5539.9638987993. The cubic root of 30691200 is about 313.0915090016.

The spelling of 30691200 in words is "thirty million, six hundred ninety-one thousand, two hundred".