16043140 has 24 divisors (see below), whose sum is σ = 34072920. Its totient is φ = 6344448.

The previous prime is 16043123. The next prime is 16043149. The reversal of 16043140 is 4134061.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 298116 + 15745024 = 546^2 + 3968^2 .

It is not an unprimeable number, because it can be changed into a prime (16043149) 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 7 ways as a sum of consecutive naturals, for example, 2727 + ... + 6286.

It is an arithmetic number, because the mean of its divisors is an integer number (1419705).

Almost surely, 2^16043140 is an apocalyptic number.

16043140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16043140 is an abundant number, since it is smaller than the sum of its proper divisors (18029780).

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

16043140 is a wasteful number, since it uses less digits than its factorization.

16043140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9111 (or 9109 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 16043140 is about 4005.3888700100. The cubic root of 16043140 is about 252.2104775514.

The spelling of 16043140 in words is "sixteen million, forty-three thousand, one hundred forty".