80671872 has 64 divisors (see below), whose sum is σ = 225583200. Its totient is φ = 25473024.

The previous prime is 80671859. The next prime is 80671873. The reversal of 80671872 is 27817608.

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 80671872.

It is not an unprimeable number, because it can be changed into a prime (80671873) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1768 + ... + 12824.

Almost surely, 2^80671872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80671872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112791600).

80671872 is an abundant number, since it is smaller than the sum of its proper divisors (144911328).

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

80671872 is a wasteful number, since it uses less digits than its factorization.

80671872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11093 (or 11081 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 39.

The square root of 80671872 is about 8981.7521675896. The cubic root of 80671872 is about 432.0898304277.

The spelling of 80671872 in words is "eighty million, six hundred seventy-one thousand, eight hundred seventy-two".