15996672 has 108 divisors (see below), whose sum is σ = 47351304. Its totient is φ = 5191680.

The previous prime is 15996671. The next prime is 15996679. The reversal of 15996672 is 27669951.

It is a happy number.

It is a super-3 number, since 3×15996672³ (a number of 23 digits) contains 333 as substring.

Its product of digits (204120) is a multiple of the sum of its prime divisors (189).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15996671) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 122047 + ... + 122177.

It is an arithmetic number, because the mean of its divisors is an integer number (438438).

Almost surely, 2^15996672 is an apocalyptic number.

15996672 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 15996672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23675652).

15996672 is an abundant number, since it is smaller than the sum of its proper divisors (31354632).

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

15996672 is a wasteful number, since it uses less digits than its factorization.

15996672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206 (or 189 counting only the distinct ones).

The product of its digits is 204120, while the sum is 45.

The square root of 15996672 is about 3999.5839783657. The cubic root of 15996672 is about 251.9667378623.

The spelling of 15996672 in words is "fifteen million, nine hundred ninety-six thousand, six hundred seventy-two".