305711740 has 12 divisors (see below), whose sum is σ = 641994696. Its totient is φ = 122284688.

The previous prime is 305711717. The next prime is 305711741. The reversal of 305711740 is 47117503.

It is a super-3 number, since 3×305711740³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 305711699 and 305711708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305711741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7642774 + ... + 7642813.

It is an arithmetic number, because the mean of its divisors is an integer number (53499558).

Almost surely, 2^305711740 is an apocalyptic number.

It is an amenable number.

305711740 is an abundant number, since it is smaller than the sum of its proper divisors (336282956).

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

305711740 is a wasteful number, since it uses less digits than its factorization.

305711740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15285596 (or 15285594 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 305711740 is about 17484.6143795052. The cubic root of 305711740 is about 673.6547436763.

The spelling of 305711740 in words is "three hundred five million, seven hundred eleven thousand, seven hundred forty".