15680080 has 40 divisors (see below), whose sum is σ = 39263112. Its totient is φ = 5789184.

The previous prime is 15680059. The next prime is 15680087. The reversal of 15680080 is 8008651.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 501264 + 15178816 = 708^2 + 3896^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15680087) 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 7 ways as a sum of consecutive naturals, for example, 6499 + ... + 8578.

Almost surely, 2^15680080 is an apocalyptic number.

15680080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15680080 is an abundant number, since it is smaller than the sum of its proper divisors (23583032).

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

15680080 is a wasteful number, since it uses less digits than its factorization.

15680080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15103 (or 15097 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 15680080 is about 3959.8080761572. The cubic root of 15680080 is about 250.2934154947.

The spelling of 15680080 in words is "fifteen million, six hundred eighty thousand, eighty".