16543040 has 56 divisors (see below), whose sum is σ = 41724072. Its totient is φ = 6225920.

The previous prime is 16543027. The next prime is 16543063. The reversal of 16543040 is 4034561.

It is a happy number.

16543040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 8340544 + 8202496 = 2888^2 + 2864^2 .

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 16542997 and 16543015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3920 + ... + 6960.

Almost surely, 2^16543040 is an apocalyptic number.

16543040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16543040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20862036).

16543040 is an abundant number, since it is smaller than the sum of its proper divisors (25181032).

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

16543040 is a wasteful number, since it uses less digits than its factorization.

16543040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3075 (or 3065 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 16543040 is about 4067.3136097429. The cubic root of 16543040 is about 254.8033342016.

The spelling of 16543040 in words is "sixteen million, five hundred forty-three thousand, forty".