15680634 has 16 divisors (see below), whose sum is σ = 31803840. Its totient is φ = 5153120.

The previous prime is 15680629. The next prime is 15680653. The reversal of 15680634 is 43608651.

It is a junction number, because it is equal to n+sod(n) for n = 15680595 and 15680604.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17979 + ... + 18830.

It is an arithmetic number, because the mean of its divisors is an integer number (1987740).

Almost surely, 2^15680634 is an apocalyptic number.

15680634 is an abundant number, since it is smaller than the sum of its proper divisors (16123206).

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

15680634 is a wasteful number, since it uses less digits than its factorization.

15680634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36885.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 15680634 is about 3959.8780284246. The cubic root of 15680634 is about 250.2963632032.

The spelling of 15680634 in words is "fifteen million, six hundred eighty thousand, six hundred thirty-four".