306396787394 has 16 divisors (see below), whose sum is σ = 470695427136. Its totient is φ = 149536654800.

The previous prime is 306396787391. The next prime is 306396787421. The reversal of 306396787394 is 493787693603.

It is a super-2 number, since 2×306396787394² (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 306396787394.

It is not an unprimeable number, because it can be changed into a prime (306396787391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9569702 + ... + 9601665.

It is an arithmetic number, because the mean of its divisors is an integer number (29418464196).

Almost surely, 2^306396787394 is an apocalyptic number.

306396787394 is a deficient number, since it is larger than the sum of its proper divisors (164298639742).

306396787394 is a wasteful number, since it uses less digits than its factorization.

306396787394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19171561.

The product of its (nonzero) digits is 123451776, while the sum is 65.

The spelling of 306396787394 in words is "three hundred six billion, three hundred ninety-six million, seven hundred eighty-seven thousand, three hundred ninety-four".