16104640 has 56 divisors (see below), whose sum is σ = 39044880. Its totient is φ = 6325248.

The previous prime is 16104629. The next prime is 16104643. The reversal of 16104640 is 4640161.

It is not an unprimeable number, because it can be changed into a prime (16104643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18454 + ... + 19306.

It is an arithmetic number, because the mean of its divisors is an integer number (697230).

Almost surely, 2^16104640 is an apocalyptic number.

16104640 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 16104640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19522440).

16104640 is an abundant number, since it is smaller than the sum of its proper divisors (22940240).

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

16104640 is an equidigital number, since it uses as much as digits as its factorization.

16104640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 929 (or 919 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 16104640 is about 4013.0586838470. The cubic root of 16104640 is about 252.5323423591.

The spelling of 16104640 in words is "sixteen million, one hundred four thousand, six hundred forty".