5443640 has 64 divisors (see below), whose sum is σ = 13124160. Its totient is φ = 2027520.

The previous prime is 5443639. The next prime is 5443643. The reversal of 5443640 is 463445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5443643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56072 + ... + 56168.

It is an arithmetic number, because the mean of its divisors is an integer number (205065).

Almost surely, 2^5443640 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 5443640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6562080).

5443640 is an abundant number, since it is smaller than the sum of its proper divisors (7680520).

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

5443640 is a wasteful number, since it uses less digits than its factorization.

5443640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192 (or 188 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 5443640 is about 2333.1609460129. The cubic root of 5443640 is about 175.9124047582.

The spelling of 5443640 in words is "five million, four hundred forty-three thousand, six hundred forty".