30211808 has 24 divisors (see below), whose sum is σ = 64887480. Its totient is φ = 13732480.

The previous prime is 30211801. The next prime is 30211829. The reversal of 30211808 is 80811203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30211801) 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, 42563 + ... + 43266.

It is an arithmetic number, because the mean of its divisors is an integer number (2703645).

Almost surely, 2^30211808 is an apocalyptic number.

It is an amenable number.

30211808 is an abundant number, since it is smaller than the sum of its proper divisors (34675672).

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

30211808 is a wasteful number, since it uses less digits than its factorization.

30211808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85850 (or 85842 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 30211808 is about 5496.5269034182. The cubic root of 30211808 is about 311.4527993464.

The spelling of 30211808 in words is "thirty million, two hundred eleven thousand, eight hundred eight".