306813623860 has 24 divisors (see below), whose sum is σ = 646367117256. Its totient is φ = 122333352960.

The previous prime is 306813623843. The next prime is 306813623891. The reversal of 306813623860 is 68326318603.

It can be written as a sum of positive squares in 4 ways, for example, as 17881573284 + 288932050576 = 133722^2 + 537524^2 .

It is a super-3 number, since 3×306813623860³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 306813623860.

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, 24499621 + ... + 24512140.

It is an arithmetic number, because the mean of its divisors is an integer number (26931963219).

Almost surely, 2^306813623860 is an apocalyptic number.

It is an amenable number.

306813623860 is an abundant number, since it is smaller than the sum of its proper divisors (339553493396).

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

306813623860 is a wasteful number, since it uses less digits than its factorization.

306813623860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49012083 (or 49012081 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 46.

The spelling of 306813623860 in words is "three hundred six billion, eight hundred thirteen million, six hundred twenty-three thousand, eight hundred sixty".