16011440 has 40 divisors (see below), whose sum is σ = 37417248. Its totient is φ = 6371840.

The previous prime is 16011421. The next prime is 16011449. The reversal of 16011440 is 4411061.

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

It is not an unprimeable number, because it can be changed into a prime (16011449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20660 + ... + 21420.

Almost surely, 2^16011440 is an apocalyptic number.

16011440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16011440 is an abundant number, since it is smaller than the sum of its proper divisors (21405808).

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

16011440 is a wasteful number, since it uses less digits than its factorization.

16011440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1037 (or 1031 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 16011440 is about 4001.4297444788. The cubic root of 16011440 is about 252.0442519080.

The spelling of 16011440 in words is "sixteen million, eleven thousand, four hundred forty".