16545840 has 80 divisors (see below), whose sum is σ = 52068096. Its totient is φ = 4345600.

The previous prime is 16545821. The next prime is 16545853. The reversal of 16545840 is 4854561.

16545840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a zygodrome in base 2.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16555 + ... + 17525.

Almost surely, 2^16545840 is an apocalyptic number.

16545840 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 16545840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26034048).

16545840 is an abundant number, since it is smaller than the sum of its proper divisors (35522256).

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

16545840 is a wasteful number, since it uses less digits than its factorization.

16545840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1058 (or 1052 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 33.

The square root of 16545840 is about 4067.6578027164. The cubic root of 16545840 is about 254.8177090099.

The spelling of 16545840 in words is "sixteen million, five hundred forty-five thousand, eight hundred forty".