30211868 has 6 divisors (see below), whose sum is σ = 52870776. Its totient is φ = 15105932.

The previous prime is 30211859. The next prime is 30211871. The reversal of 30211868 is 86811203.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 30211868.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3776480 + ... + 3776487.

It is an arithmetic number, because the mean of its divisors is an integer number (8811796).

Almost surely, 2^30211868 is an apocalyptic number.

It is an amenable number.

30211868 is a deficient number, since it is larger than the sum of its proper divisors (22658908).

30211868 is a wasteful number, since it uses less digits than its factorization.

30211868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7552971 (or 7552969 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 30211868 is about 5496.5323614075. The cubic root of 30211868 is about 311.4530055258.

The spelling of 30211868 in words is "thirty million, two hundred eleven thousand, eight hundred sixty-eight".