404536 has 16 divisors (see below), whose sum is σ = 827640. Its totient is φ = 183840.

The previous prime is 404533. The next prime is 404539. The reversal of 404536 is 635404.

It is an interprime number because it is at equal distance from previous prime (404533) and next prime (404539).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404531) 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, 2211 + ... + 2386.

2⁴⁰⁴⁵³⁶ is an apocalyptic number.

It is an amenable number.

404536 is an abundant number, since it is smaller than the sum of its proper divisors (423104).

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

404536 is a wasteful number, since it uses less digits than its factorization.

404536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4614 (or 4610 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 404536 is about 636.0314457635. The cubic root of 404536 is about 73.9580965586.

The spelling of 404536 in words is "four hundred four thousand, five hundred thirty-six".