30810868 has 36 divisors (see below), whose sum is σ = 62510112. Its totient is φ = 13175680.

The previous prime is 30810863. The next prime is 30810877. The reversal of 30810868 is 86801803.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30810863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11505 + ... + 13927.

It is an arithmetic number, because the mean of its divisors is an integer number (1736392).

Almost surely, 2^30810868 is an apocalyptic number.

It is an amenable number.

30810868 is an abundant number, since it is smaller than the sum of its proper divisors (31699244).

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

30810868 is a wasteful number, since it uses less digits than its factorization.

30810868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2472 (or 2453 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 30810868 is about 5550.7538226803. The cubic root of 30810868 is about 313.4979061016.

The spelling of 30810868 in words is "thirty million, eight hundred ten thousand, eight hundred sixty-eight".