306706394 has 8 divisors (see below), whose sum is σ = 472493748. Its totient is φ = 149208480.

The previous prime is 306706391. The next prime is 306706399. The reversal of 306706394 is 493607603.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 306705169 + 1225 = 17513^2 + 35^2 .

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

It is not an unprimeable number, because it can be changed into a prime (306706391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2072267 + ... + 2072414.

Almost surely, 2^306706394 is an apocalyptic number.

306706394 is a deficient number, since it is larger than the sum of its proper divisors (165787354).

306706394 is a wasteful number, since it uses less digits than its factorization.

306706394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4144720.

The product of its (nonzero) digits is 81648, while the sum is 38.

The square root of 306706394 is about 17513.0349739844. The cubic root of 306706394 is about 674.3845466468.

The spelling of 306706394 in words is "three hundred six million, seven hundred six thousand, three hundred ninety-four".