16043540 has 12 divisors (see below), whose sum is σ = 33691476. Its totient is φ = 6417408.

The previous prime is 16043539. The next prime is 16043551. The reversal of 16043540 is 4534061.

It is a happy number.

16043540 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 2 ways, for example, as 6728836 + 9314704 = 2594^2 + 3052^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 401069 + ... + 401108.

It is an arithmetic number, because the mean of its divisors is an integer number (2807623).

Almost surely, 2^16043540 is an apocalyptic number.

16043540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16043540 is an abundant number, since it is smaller than the sum of its proper divisors (17647936).

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

16043540 is a wasteful number, since it uses less digits than its factorization.

16043540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802186 (or 802184 counting only the distinct ones).

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

The square root of 16043540 is about 4005.4388024285. The cubic root of 16043540 is about 252.2125736363.

The spelling of 16043540 in words is "sixteen million, forty-three thousand, five hundred forty".