5643924 has 108 divisors (see below), whose sum is σ = 16355808. Its totient is φ = 1510080.

The previous prime is 5643923. The next prime is 5643961. The reversal of 5643924 is 4293465.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5643923) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 245377 + ... + 245399.

Almost surely, 2^5643924 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 5643924, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8177904).

5643924 is an abundant number, since it is smaller than the sum of its proper divisors (10711884).

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

5643924 is a wasteful number, since it uses less digits than its factorization.

5643924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78 (or 52 counting only the distinct ones).

The product of its digits is 25920, while the sum is 33.

The square root of 5643924 is about 2375.6944247946. The cubic root of 5643924 is about 178.0438809460.

The spelling of 5643924 in words is "five million, six hundred forty-three thousand, nine hundred twenty-four".