80891472 has 60 divisors (see below), whose sum is σ = 214944576. Its totient is φ = 26213760.

The previous prime is 80891453. The next prime is 80891533. The reversal of 80891472 is 27419808.

It is a self number, because there is not a number n which added to its sum of digits gives 80891472.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65097 + ... + 66327.

Almost surely, 2^80891472 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 80891472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107472288).

80891472 is an abundant number, since it is smaller than the sum of its proper divisors (134053104).

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

80891472 is a wasteful number, since it uses less digits than its factorization.

80891472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1316 (or 1273 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 80891472 is about 8993.9686457092. The cubic root of 80891472 is about 432.4815446478.

The spelling of 80891472 in words is "eighty million, eight hundred ninety-one thousand, four hundred seventy-two".