30255812 has 6 divisors (see below), whose sum is σ = 52947678. Its totient is φ = 15127904.

The previous prime is 30255781. The next prime is 30255821. The reversal of 30255812 is 21855203.

It can be written as a sum of positive squares in only one way, i.e., 28047616 + 2208196 = 5296^2 + 1486^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3781973 + ... + 3781980.

It is an arithmetic number, because the mean of its divisors is an integer number (8824613).

Almost surely, 2^30255812 is an apocalyptic number.

It is an amenable number.

30255812 is a deficient number, since it is larger than the sum of its proper divisors (22691866).

30255812 is a wasteful number, since it uses less digits than its factorization.

30255812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7563957 (or 7563955 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 30255812 is about 5500.5283382599. The cubic root of 30255812 is about 311.6039380493.

The spelling of 30255812 in words is "thirty million, two hundred fifty-five thousand, eight hundred twelve".