30481985 has 16 divisors (see below), whose sum is σ = 39086400. Its totient is φ = 22752576.

The previous prime is 30481967. The next prime is 30481993. The reversal of 30481985 is 58918403.

It is not a de Polignac number, because 30481985 - 2⁸ = 30481729 is a prime.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 3971 + ... + 8759.

It is an arithmetic number, because the mean of its divisors is an integer number (2442900).

Almost surely, 2^30481985 is an apocalyptic number.

It is an amenable number.

30481985 is a deficient number, since it is larger than the sum of its proper divisors (8604415).

30481985 is a wasteful number, since it uses less digits than its factorization.

30481985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4880.

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 30481985 is about 5521.0492662174. The cubic root of 30481985 is about 312.3784615370.

The spelling of 30481985 in words is "thirty million, four hundred eighty-one thousand, nine hundred eighty-five".