30289668 has 12 divisors (see below), whose sum is σ = 70675920. Its totient is φ = 10096552.

The previous prime is 30289663. The next prime is 30289681. The reversal of 30289668 is 86698203.

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

It is not an unprimeable number, because it can be changed into a prime (30289663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1262058 + ... + 1262081.

It is an arithmetic number, because the mean of its divisors is an integer number (5889660).

Almost surely, 2^30289668 is an apocalyptic number.

It is an amenable number.

30289668 is an abundant number, since it is smaller than the sum of its proper divisors (40386252).

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

30289668 is a wasteful number, since it uses less digits than its factorization.

30289668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2524146 (or 2524144 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 30289668 is about 5503.6050003611. The cubic root of 30289668 is about 311.7201221220.

The spelling of 30289668 in words is "thirty million, two hundred eighty-nine thousand, six hundred sixty-eight".