304426 has 4 divisors (see below), whose sum is σ = 456642. Its totient is φ = 152212.

The previous prime is 304417. The next prime is 304429. The reversal of 304426 is 624403.

304426 = T₄₄₉ + T₄₅₀ + T₄₅₁.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 301401 + 3025 = 549^2 + 55^2 .

It is not an unprimeable number, because it can be changed into a prime (304429) by changing a digit.

304426 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76105 + ... + 76108.

2³⁰⁴⁴²⁶ is an apocalyptic number.

304426 is the 451-st centered triangular number.

304426 is a deficient number, since it is larger than the sum of its proper divisors (152216).

304426 is a wasteful number, since it uses less digits than its factorization.

304426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152215.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 304426 is about 551.7481309438. The cubic root of 304426 is about 67.2709014047.

Adding to 304426 its reverse (624403), we get a palindrome (928829).

The spelling of 304426 in words is "three hundred four thousand, four hundred twenty-six".