15663072 has 48 divisors (see below), whose sum is σ = 41347152. Its totient is φ = 5191680.

The previous prime is 15663061. The next prime is 15663083. The reversal of 15663072 is 27036651.

It is an interprime number because it is at equal distance from previous prime (15663061) and next prime (15663083).

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22798 + ... + 23474.

It is an arithmetic number, because the mean of its divisors is an integer number (861399).

Almost surely, 2^15663072 is an apocalyptic number.

15663072 is a gapful number since it is divisible by the number (12) 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 15663072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20673576).

15663072 is an abundant number, since it is smaller than the sum of its proper divisors (25684080).

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

15663072 is a wasteful number, since it uses less digits than its factorization.

15663072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 931 (or 923 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 15663072 is about 3957.6599146465. The cubic root of 15663072 is about 250.2028859713.

The spelling of 15663072 in words is "fifteen million, six hundred sixty-three thousand, seventy-two".