306740426 has 8 divisors (see below), whose sum is σ = 462446820. Its totient is φ = 152591488.

The previous prime is 306740419. The next prime is 306740429. The reversal of 306740426 is 624047603.

It can be written as a sum of positive squares in 2 ways, for example, as 302934025 + 3806401 = 17405^2 + 1951^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×306740426³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 306740392 and 306740401.

It is not an unprimeable number, because it can be changed into a prime (306740429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 388871 + ... + 389658.

Almost surely, 2^306740426 is an apocalyptic number.

306740426 is a deficient number, since it is larger than the sum of its proper divisors (155706394).

306740426 is a wasteful number, since it uses less digits than its factorization.

306740426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778728.

The product of its (nonzero) digits is 24192, while the sum is 32.

The square root of 306740426 is about 17514.0065661744. The cubic root of 306740426 is about 674.4094888571.

The spelling of 306740426 in words is "three hundred six million, seven hundred forty thousand, four hundred twenty-six".