306426 has 8 divisors (see below), whose sum is σ = 612864. Its totient is φ = 102140.

The previous prime is 306421. The next prime is 306431. The reversal of 306426 is 624603.

It is an interprime number because it is at equal distance from previous prime (306421) and next prime (306431).

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

306426 is an admirable number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (306421) by changing a digit.

306426 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25530 + ... + 25541.

It is an arithmetic number, because the mean of its divisors is an integer number (76608).

2³⁰⁶⁴²⁶ is an apocalyptic number.

306426 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

306426 is a wasteful number, since it uses less digits than its factorization.

306426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51076.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 306426 is about 553.5575850804. The cubic root of 306426 is about 67.4178974328.

The spelling of 306426 in words is "three hundred six thousand, four hundred twenty-six".