306749406172 has 96 divisors (see below), whose sum is σ = 652976916480. Its totient is φ = 124269189120.

The previous prime is 306749406151. The next prime is 306749406181. The reversal of 306749406172 is 271604947603.

It is a super-3 number, since 3×306749406172³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 61066453 + ... + 61071475.

It is an arithmetic number, because the mean of its divisors is an integer number (6801842880).

Almost surely, 2^306749406172 is an apocalyptic number.

It is an amenable number.

306749406172 is an abundant number, since it is smaller than the sum of its proper divisors (346227510308).

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

306749406172 is a wasteful number, since it uses less digits than its factorization.

306749406172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9371 (or 9369 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 49.

The spelling of 306749406172 in words is "three hundred six billion, seven hundred forty-nine million, four hundred six thousand, one hundred seventy-two".