543440436 has 96 divisors (see below), whose sum is σ = 1585059840. Its totient is φ = 140784000.

The previous prime is 543440431. The next prime is 543440437. The reversal of 543440436 is 634044345.

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

It is a junction number, because it is equal to n+sod(n) for n = 543440397 and 543440406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (543440431) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 647305 + ... + 648143.

It is an arithmetic number, because the mean of its divisors is an integer number (16511040).

Almost surely, 2^543440436 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 543440436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (792529920).

543440436 is an abundant number, since it is smaller than the sum of its proper divisors (1041619404).

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

543440436 is a wasteful number, since it uses less digits than its factorization.

543440436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1565 (or 1563 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 33.

The square root of 543440436 is about 23311.8089388190. The cubic root of 543440436 is about 816.0510288638.

The spelling of 543440436 in words is "five hundred forty-three million, four hundred forty thousand, four hundred thirty-six".