16541440 has 36 divisors (see below), whose sum is σ = 39624984. Its totient is φ = 6616064.

The previous prime is 16541423. The next prime is 16541443. The reversal of 16541440 is 4414561.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16541443) 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 3 ways as a sum of consecutive naturals, for example, 5182 + ... + 7741.

It is an arithmetic number, because the mean of its divisors is an integer number (1100694).

Almost surely, 2^16541440 is an apocalyptic number.

16541440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16541440 is an abundant number, since it is smaller than the sum of its proper divisors (23083544).

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

16541440 is an equidigital number, since it uses as much as digits as its factorization.

16541440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12944 (or 12930 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 16541440 is about 4067.1169149657. The cubic root of 16541440 is about 254.7951192971.

The spelling of 16541440 in words is "sixteen million, five hundred forty-one thousand, four hundred forty".