15972080 has 40 divisors (see below), whose sum is σ = 37845792. Its totient is φ = 6266624.

The previous prime is 15972079. The next prime is 15972091. The reversal of 15972080 is 8027951.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2357 + ... + 6123.

Almost surely, 2^15972080 is an apocalyptic number.

15972080 is a gapful number since it is divisible by the number (10) 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 15972080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18922896).

15972080 is an abundant number, since it is smaller than the sum of its proper divisors (21873712).

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

15972080 is a wasteful number, since it uses less digits than its factorization.

15972080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3833 (or 3827 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 15972080 is about 3996.5084761577. The cubic root of 15972080 is about 251.8375538254.

The spelling of 15972080 in words is "fifteen million, nine hundred seventy-two thousand, eighty".