15680396 has 18 divisors (see below), whose sum is σ = 28963620. Its totient is φ = 7426872.

The previous prime is 15680393. The next prime is 15680407. The reversal of 15680396 is 69308651.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is not an unprimeable number, because it can be changed into a prime (15680393) 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 5 ways as a sum of consecutive naturals, for example, 3986 + ... + 6873.

It is an arithmetic number, because the mean of its divisors is an integer number (1609090).

Almost surely, 2^15680396 is an apocalyptic number.

It is an amenable number.

15680396 is a deficient number, since it is larger than the sum of its proper divisors (13283224).

15680396 is a wasteful number, since it uses less digits than its factorization.

15680396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10901 (or 10880 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 15680396 is about 3959.8479768799. The cubic root of 15680396 is about 250.2950968676.

The spelling of 15680396 in words is "fifteen million, six hundred eighty thousand, three hundred ninety-six".