306145184140 has 48 divisors (see below), whose sum is σ = 671152914432. Its totient is φ = 117082190016.

The previous prime is 306145184129. The next prime is 306145184141. The reversal of 306145184140 is 41481541603.

It is a super-2 number, since 2×306145184140² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 306145184140.

It is not an unprimeable number, because it can be changed into a prime (306145184141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 906517 + ... + 1197523.

It is an arithmetic number, because the mean of its divisors is an integer number (13982352384).

Almost surely, 2^306145184140 is an apocalyptic number.

It is an amenable number.

306145184140 is an abundant number, since it is smaller than the sum of its proper divisors (365007730292).

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

306145184140 is a wasteful number, since it uses less digits than its factorization.

306145184140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293326 (or 293324 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 37.

The spelling of 306145184140 in words is "three hundred six billion, one hundred forty-five million, one hundred eighty-four thousand, one hundred forty".