30168140 has 12 divisors (see below), whose sum is σ = 63353136. Its totient is φ = 12067248.

The previous prime is 30168137. The next prime is 30168161. The reversal of 30168140 is 4186103.

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 3 ways as a sum of consecutive naturals, for example, 754184 + ... + 754223.

It is an arithmetic number, because the mean of its divisors is an integer number (5279428).

Almost surely, 2^30168140 is an apocalyptic number.

It is an amenable number.

30168140 is an abundant number, since it is smaller than the sum of its proper divisors (33184996).

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

30168140 is a wasteful number, since it uses less digits than its factorization.

30168140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1508416 (or 1508414 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 30168140 is about 5492.5531403893. The cubic root of 30168140 is about 311.3026695382.

The spelling of 30168140 in words is "thirty million, one hundred sixty-eight thousand, one hundred forty".