30905148 has 24 divisors (see below), whose sum is σ = 73474128. Its totient is φ = 10107136.

The previous prime is 30905143. The next prime is 30905159. The reversal of 30905148 is 84150903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30905143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23661 + ... + 24932.

It is an arithmetic number, because the mean of its divisors is an integer number (3061422).

Almost surely, 2^30905148 is an apocalyptic number.

It is an amenable number.

30905148 is an abundant number, since it is smaller than the sum of its proper divisors (42568980).

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

30905148 is a wasteful number, since it uses less digits than its factorization.

30905148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48653 (or 48651 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 30905148 is about 5559.2398760982. The cubic root of 30905148 is about 313.8173441045.

The spelling of 30905148 in words is "thirty million, nine hundred five thousand, one hundred forty-eight".