305341040 has 20 divisors (see below), whose sum is σ = 709918104. Its totient is φ = 122136384.

The previous prime is 305341033. The next prime is 305341067. The reversal of 305341040 is 40143503.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

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, 1908302 + ... + 1908461.

Almost surely, 2^305341040 is an apocalyptic number.

It is an amenable number.

305341040 is an abundant number, since it is smaller than the sum of its proper divisors (404577064).

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

305341040 is a wasteful number, since it uses less digits than its factorization.

305341040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3816776 (or 3816770 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 305341040 is about 17474.0104154713. The cubic root of 305341040 is about 673.3823467464.

Adding to 305341040 its reverse (40143503), we get a palindrome (345484543).

The spelling of 305341040 in words is "three hundred five million, three hundred forty-one thousand, forty".