30281930 has 32 divisors (see below), whose sum is σ = 65961216. Its totient is φ = 9771264.

The previous prime is 30281899. The next prime is 30281941. The reversal of 30281930 is 3918203.

It is a self number, because there is not a number n which added to its sum of digits gives 30281930.

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, 11534 + ... + 13913.

It is an arithmetic number, because the mean of its divisors is an integer number (2061288).

Almost surely, 2^30281930 is an apocalyptic number.

30281930 is an abundant number, since it is smaller than the sum of its proper divisors (35679286).

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

30281930 is a wasteful number, since it uses less digits than its factorization.

30281930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25478.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 30281930 is about 5502.9019616926. The cubic root of 30281930 is about 311.6935751628.

The spelling of 30281930 in words is "thirty million, two hundred eighty-one thousand, nine hundred thirty".