15980244 has 48 divisors (see below), whose sum is σ = 43051008. Its totient is φ = 4519008.

The previous prime is 15980243. The next prime is 15980249. The reversal of 15980244 is 44208951.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15980243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7729 + ... + 9575.

It is an arithmetic number, because the mean of its divisors is an integer number (896896).

Almost surely, 2^15980244 is an apocalyptic number.

15980244 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15980244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21525504).

15980244 is an abundant number, since it is smaller than the sum of its proper divisors (27070764).

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

15980244 is a wasteful number, since it uses less digits than its factorization.

15980244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1964 (or 1962 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 15980244 is about 3997.5297372252. The cubic root of 15980244 is about 251.8804547622.

The spelling of 15980244 in words is "fifteen million, nine hundred eighty thousand, two hundred forty-four".