305493140 has 24 divisors (see below), whose sum is σ = 643487712. Its totient is φ = 121825440.

The previous prime is 305493137. The next prime is 305493161. The reversal of 305493140 is 41394503.

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 16454 + ... + 29693.

It is an arithmetic number, because the mean of its divisors is an integer number (26811988).

Almost surely, 2^305493140 is an apocalyptic number.

It is an amenable number.

305493140 is an abundant number, since it is smaller than the sum of its proper divisors (337994572).

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

305493140 is a wasteful number, since it uses less digits than its factorization.

305493140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46487 (or 46485 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 305493140 is about 17478.3620514052. The cubic root of 305493140 is about 673.4941391793.

The spelling of 305493140 in words is "three hundred five million, four hundred ninety-three thousand, one hundred forty".