305440713 has 40 divisors (see below), whose sum is σ = 501230400. Its totient is φ = 184501152.

The previous prime is 305440703. The next prime is 305440721. The reversal of 305440713 is 317044503.

It is not a de Polignac number, because 305440713 - 2⁴ = 305440697 is a prime.

It is a super-3 number, since 3×305440713³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305440703) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 31083 + ... + 39711.

It is an arithmetic number, because the mean of its divisors is an integer number (12530760).

Almost surely, 2^305440713 is an apocalyptic number.

It is an amenable number.

305440713 is a deficient number, since it is larger than the sum of its proper divisors (195789687).

305440713 is a wasteful number, since it uses less digits than its factorization.

305440713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8683 (or 8674 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 305440713 is about 17476.8622183732. The cubic root of 305440713 is about 673.4556098937.

It can be divided in two parts, 305440 and 713, that added together give a triangular number (306153 = T₇₈₂).

The spelling of 305440713 in words is "three hundred five million, four hundred forty thousand, seven hundred thirteen".