306704240 has 40 divisors (see below), whose sum is σ = 716271120. Its totient is φ = 122134016.

The previous prime is 306704239. The next prime is 306704257. The reversal of 306704240 is 42407603.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9716 + ... + 26604.

It is an arithmetic number, because the mean of its divisors is an integer number (17906778).

Almost surely, 2^306704240 is an apocalyptic number.

It is an amenable number.

306704240 is an abundant number, since it is smaller than the sum of its proper divisors (409566880).

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

306704240 is a wasteful number, since it uses less digits than its factorization.

306704240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17129 (or 17123 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 306704240 is about 17512.9734768257. The cubic root of 306704240 is about 674.3829679082.

The spelling of 306704240 in words is "three hundred six million, seven hundred four thousand, two hundred forty".