16056440 has 16 divisors (see below), whose sum is σ = 36127080. Its totient is φ = 6422560.

The previous prime is 16056431. The next prime is 16056451. The reversal of 16056440 is 4465061.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200666 + ... + 200745.

Almost surely, 2^16056440 is an apocalyptic number.

16056440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16056440 is an abundant number, since it is smaller than the sum of its proper divisors (20070640).

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

16056440 is a wasteful number, since it uses less digits than its factorization.

16056440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401422 (or 401418 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 16056440 is about 4007.0487893211. The cubic root of 16056440 is about 252.2801537043.

The spelling of 16056440 in words is "sixteen million, fifty-six thousand, four hundred forty".