30808985 has 8 divisors (see below), whose sum is σ = 37093056. Its totient is φ = 24565680.

The previous prime is 30808979. The next prime is 30808997. The reversal of 30808985 is 58980803.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30808985 - 2⁴ = 30808969 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8501 + ... + 11570.

It is an arithmetic number, because the mean of its divisors is an integer number (4636632).

Almost surely, 2^30808985 is an apocalyptic number.

It is an amenable number.

30808985 is a deficient number, since it is larger than the sum of its proper divisors (6284071).

30808985 is a wasteful number, since it uses less digits than its factorization.

30808985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20383.

The product of its (nonzero) digits is 69120, while the sum is 41.

The square root of 30808985 is about 5550.5842034871. The cubic root of 30808985 is about 313.4915195177.

The spelling of 30808985 in words is "thirty million, eight hundred eight thousand, nine hundred eighty-five".