15309996 has 96 divisors (see below), whose sum is σ = 42674688. Its totient is φ = 4224000.

The previous prime is 15309967. The next prime is 15309997. The reversal of 15309996 is 69990351.

It is not an unprimeable number, because it can be changed into a prime (15309997) 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 31 ways as a sum of consecutive naturals, for example, 60871 + ... + 61121.

It is an arithmetic number, because the mean of its divisors is an integer number (444528).

Almost surely, 2^15309996 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 15309996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21337344).

15309996 is an abundant number, since it is smaller than the sum of its proper divisors (27364692).

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

15309996 is a wasteful number, since it uses less digits than its factorization.

15309996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311 (or 309 counting only the distinct ones).

The product of its (nonzero) digits is 65610, while the sum is 42.

The square root of 15309996 is about 3912.7989981598. The cubic root of 15309996 is about 248.3085606066.

The spelling of 15309996 in words is "fifteen million, three hundred nine thousand, nine hundred ninety-six".