15966672 has 60 divisors (see below), whose sum is σ = 43854336. Its totient is φ = 5004800.

The previous prime is 15966659. The next prime is 15966739. The reversal of 15966672 is 27666951.

15966672 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×15966672² = 509869229511168, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13297 + ... + 14447.

Almost surely, 2^15966672 is an apocalyptic number.

15966672 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 15966672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21927168).

15966672 is an abundant number, since it is smaller than the sum of its proper divisors (27887664).

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

15966672 is a wasteful number, since it uses less digits than its factorization.

15966672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1196 (or 1173 counting only the distinct ones).

The product of its digits is 136080, while the sum is 42.

The square root of 15966672 is about 3995.8318282931. The cubic root of 15966672 is about 251.8091273205.

The spelling of 15966672 in words is "fifteen million, nine hundred sixty-six thousand, six hundred seventy-two".