15990296 has 64 divisors (see below), whose sum is σ = 36188160. Its totient is φ = 6480000.

The previous prime is 15990277. The next prime is 15990301. The reversal of 15990296 is 69209951.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105821 + ... + 105971.

It is an arithmetic number, because the mean of its divisors is an integer number (565440).

Almost surely, 2^15990296 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 15990296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18094080).

15990296 is an abundant number, since it is smaller than the sum of its proper divisors (20197864).

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

15990296 is a wasteful number, since it uses less digits than its factorization.

15990296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256 (or 252 counting only the distinct ones).

The product of its (nonzero) digits is 43740, while the sum is 41.

The square root of 15990296 is about 3998.7868160231. The cubic root of 15990296 is about 251.9332568688.

The spelling of 15990296 in words is "fifteen million, nine hundred ninety thousand, two hundred ninety-six".