30906285 has 32 divisors (see below), whose sum is σ = 51217920. Its totient is φ = 15902208.

The previous prime is 30906269. The next prime is 30906299. The reversal of 30906285 is 58260903.

It is a happy number.

It is not a de Polignac number, because 30906285 - 2⁴ = 30906269 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 129196 + ... + 129434.

It is an arithmetic number, because the mean of its divisors is an integer number (1600560).

Almost surely, 2^30906285 is an apocalyptic number.

It is an amenable number.

30906285 is a deficient number, since it is larger than the sum of its proper divisors (20311635).

30906285 is a wasteful number, since it uses less digits than its factorization.

30906285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 30906285 is about 5559.3421373396. The cubic root of 30906285 is about 313.8211925027.

The spelling of 30906285 in words is "thirty million, nine hundred six thousand, two hundred eighty-five".