30948140 has 12 divisors (see below), whose sum is σ = 64991136. Its totient is φ = 12379248.

The previous prime is 30948139. The next prime is 30948149. The reversal of 30948140 is 4184903.

It is not an unprimeable number, because it can be changed into a prime (30948149) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 773684 + ... + 773723.

It is an arithmetic number, because the mean of its divisors is an integer number (5415928).

Almost surely, 2^30948140 is an apocalyptic number.

It is an amenable number.

30948140 is an abundant number, since it is smaller than the sum of its proper divisors (34042996).

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

30948140 is a wasteful number, since it uses less digits than its factorization.

30948140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1547416 (or 1547414 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 30948140 is about 5563.1052479708. The cubic root of 30948140 is about 313.9627932709.

The spelling of 30948140 in words is "thirty million, nine hundred forty-eight thousand, one hundred forty".