424536 has 72 divisors (see below), whose sum is σ = 1303020. Its totient is φ = 114912.

The previous prime is 424519. The next prime is 424537. The reversal of 424536 is 635424.

424536 = 68² + 69² + ... + 116².

424536 is nontrivially palindromic in base 11.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424537) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 22335 + ... + 22353.

2⁴²⁴⁵³⁶ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 424536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (651510).

424536 is an abundant number, since it is smaller than the sum of its proper divisors (878484).

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

424536 is a wasteful number, since it uses less digits than its factorization.

424536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61 (or 31 counting only the distinct ones).

The product of its digits is 2880, while the sum is 24.

The square root of 424536 is about 651.5642715803. The cubic root of 424536 is about 75.1573585020.

Multiplying 424536 by its sum of digits (24), we get a square (10188864 = 3192²).

424536 divided by its sum of digits (24) gives a square (17689 = 133²).

The spelling of 424536 in words is "four hundred twenty-four thousand, five hundred thirty-six".