80981712 has 180 divisors, whose sum is σ = 275652000. Its totient is φ = 22087296.

The previous prime is 80981707. The next prime is 80981731. The reversal of 80981712 is 21718908.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 162039 + ... + 162537.

It is an arithmetic number, because the mean of its divisors is an integer number (1531400).

Almost surely, 2^80981712 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 80981712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137826000).

80981712 is an abundant number, since it is smaller than the sum of its proper divisors (194670288).

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

80981712 is a wasteful number, since it uses less digits than its factorization.

80981712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550 (or 534 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 36.

The square root of 80981712 is about 8998.9839426460. The cubic root of 80981712 is about 432.6423058510.

The spelling of 80981712 in words is "eighty million, nine hundred eighty-one thousand, seven hundred twelve".