436426 has 4 divisors (see below), whose sum is σ = 654642. Its totient is φ = 218212.

The previous prime is 436417. The next prime is 436427. The reversal of 436426 is 624634.

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., 275625 + 160801 = 525^2 + 401^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 436426.

It is not an unprimeable number, because it can be changed into a prime (436427) by changing a digit.

436426 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, 109105 + ... + 109108.

2⁴³⁶⁴²⁶ is an apocalyptic number.

436426 is a deficient number, since it is larger than the sum of its proper divisors (218216).

436426 is a wasteful number, since it uses less digits than its factorization.

436426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218215.

The product of its digits is 3456, while the sum is 25.

The square root of 436426 is about 660.6254612108. The cubic root of 436426 is about 75.8525534612.

The spelling of 436426 in words is "four hundred thirty-six thousand, four hundred twenty-six".