16013840 has 40 divisors (see below), whose sum is σ = 38033280. Its totient is φ = 6267776.

The previous prime is 16013831. The next prime is 16013861. The reversal of 16013840 is 4831061.

It is a tau number, because it is divible by the number of its divisors (40).

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, 1631 + ... + 5889.

It is an arithmetic number, because the mean of its divisors is an integer number (950832).

Almost surely, 2^16013840 is an apocalyptic number.

16013840 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 16013840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19016640).

16013840 is an abundant number, since it is smaller than the sum of its proper divisors (22019440).

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

16013840 is a wasteful number, since it uses less digits than its factorization.

16013840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4319 (or 4313 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 16013840 is about 4001.7296260492. The cubic root of 16013840 is about 252.0568444873.

The spelling of 16013840 in words is "sixteen million, thirteen thousand, eight hundred forty".