16640760 has 64 divisors (see below), whose sum is σ = 50453280. Its totient is φ = 4390400.

The previous prime is 16640759. The next prime is 16640761. The reversal of 16640760 is 6704661.

It is an interprime number because it is at equal distance from previous prime (16640759) and next prime (16640761).

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16640761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11434 + ... + 12806.

Almost surely, 2^16640760 is an apocalyptic number.

16640760 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 16640760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25226640).

16640760 is an abundant number, since it is smaller than the sum of its proper divisors (33812520).

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

16640760 is a wasteful number, since it uses less digits than its factorization.

16640760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1488 (or 1484 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 16640760 is about 4079.3087649748. The cubic root of 16640760 is about 255.3040586767.

The spelling of 16640760 in words is "sixteen million, six hundred forty thousand, seven hundred sixty".