17680104 has 72 divisors (see below), whose sum is σ = 51885990. Its totient is φ = 5436288.

The previous prime is 17680099. The next prime is 17680129. The reversal of 17680104 is 40108671.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 14062500 + 3617604 = 3750^2 + 1902^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 11442 + ... + 12894.

Almost surely, 2^17680104 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 17680104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25942995).

17680104 is an abundant number, since it is smaller than the sum of its proper divisors (34205886).

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

17680104 is a wasteful number, since it uses less digits than its factorization.

17680104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1491 (or 1471 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 17680104 is about 4204.7715752464. The cubic root of 17680104 is about 260.5123231510.

Adding to 17680104 its reverse (40108671), we get a palindrome (57788775).

The spelling of 17680104 in words is "seventeen million, six hundred eighty thousand, one hundred four".