306909890740 has 12 divisors (see below), whose sum is σ = 644510770596. Its totient is φ = 122763956288.

The previous prime is 306909890737. The next prime is 306909890747. The reversal of 306909890740 is 47098909603.

It can be written as a sum of positive squares in 2 ways, for example, as 64456069924 + 242453820816 = 253882^2 + 492396^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (306909890747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7672747249 + ... + 7672747288.

It is an arithmetic number, because the mean of its divisors is an integer number (53709230883).

Almost surely, 2^306909890740 is an apocalyptic number.

It is an amenable number.

306909890740 is an abundant number, since it is smaller than the sum of its proper divisors (337600879856).

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

306909890740 is a wasteful number, since it uses less digits than its factorization.

306909890740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15345494546 (or 15345494544 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 55.

The spelling of 306909890740 in words is "three hundred six billion, nine hundred nine million, eight hundred ninety thousand, seven hundred forty".