30668772 has 12 divisors (see below), whose sum is σ = 71560496. Its totient is φ = 10222920.

The previous prime is 30668753. The next prime is 30668773. The reversal of 30668772 is 27786603.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 30668772.

It is not an unprimeable number, because it can be changed into a prime (30668773) 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 3 ways as a sum of consecutive naturals, for example, 1277854 + ... + 1277877.

Almost surely, 2^30668772 is an apocalyptic number.

It is an amenable number.

30668772 is an abundant number, since it is smaller than the sum of its proper divisors (40891724).

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

30668772 is a wasteful number, since it uses less digits than its factorization.

30668772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2555738 (or 2555736 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 39.

The square root of 30668772 is about 5537.9393279450. The cubic root of 30668772 is about 313.0152251642.

The spelling of 30668772 in words is "thirty million, six hundred sixty-eight thousand, seven hundred seventy-two".