16317440 has 44 divisors (see below), whose sum is σ = 39155016. Its totient is φ = 6524928.

The previous prime is 16317421. The next prime is 16317443. The reversal of 16317440 is 4471361.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

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 (16317443) 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, 3527 + ... + 6713.

Almost surely, 2^16317440 is an apocalyptic number.

16317440 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 16317440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19577508).

16317440 is an abundant number, since it is smaller than the sum of its proper divisors (22837576).

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

16317440 is an equidigital number, since it uses as much as digits as its factorization.

16317440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3212 (or 3194 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 16317440 is about 4039.4851157047. The cubic root of 16317440 is about 253.6397646184.

The spelling of 16317440 in words is "sixteen million, three hundred seventeen thousand, four hundred forty".