305055240 has 64 divisors (see below), whose sum is σ = 1045906560. Its totient is φ = 69726720.

The previous prime is 305055173. The next prime is 305055271. The reversal of 305055240 is 42550503.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 305055240.

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, 180741 + ... + 182420.

It is an arithmetic number, because the mean of its divisors is an integer number (16342290).

Almost surely, 2^305055240 is an apocalyptic number.

305055240 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

305055240 is an abundant number, since it is smaller than the sum of its proper divisors (740851320).

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

305055240 is a wasteful number, since it uses less digits than its factorization.

305055240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363182 (or 363178 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 24.

The square root of 305055240 is about 17465.8306415698. The cubic root of 305055240 is about 673.1721852918.

The spelling of 305055240 in words is "three hundred five million, fifty-five thousand, two hundred forty".