30868290 has 48 divisors (see below), whose sum is σ = 83236608. Its totient is φ = 8230896.

The previous prime is 30868289. The next prime is 30868297. The reversal of 30868290 is 9286803.

30868290 is a `hidden beast` number, since 308 + 68 + 290 = 666.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30868297) by changing a digit.

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, 3922 + ... + 8781.

It is an arithmetic number, because the mean of its divisors is an integer number (1734096).

Almost surely, 2^30868290 is an apocalyptic number.

30868290 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30868290 is an abundant number, since it is smaller than the sum of its proper divisors (52368318).

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

30868290 is a wasteful number, since it uses less digits than its factorization.

30868290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12725 (or 12713 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 30868290 is about 5555.9238655691. The cubic root of 30868290 is about 313.6925398602.

The spelling of 30868290 in words is "thirty million, eight hundred sixty-eight thousand, two hundred ninety".