80947680 has 96 divisors (see below), whose sum is σ = 278183808. Its totient is φ = 19622400.

The previous prime is 80947673. The next prime is 80947687. The reversal of 80947680 is 8674908.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (80947673) and next prime (80947687).

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80947687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2386 + ... + 12945.

It is an arithmetic number, because the mean of its divisors is an integer number (2897748).

Almost surely, 2^80947680 is an apocalyptic number.

80947680 is a gapful number since it is divisible by the number (80) 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 80947680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139091904).

80947680 is an abundant number, since it is smaller than the sum of its proper divisors (197236128).

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

80947680 is a wasteful number, since it uses less digits than its factorization.

80947680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15360 (or 15352 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 80947680 is about 8997.0928638088. The cubic root of 80947680 is about 432.5816923882.

The spelling of 80947680 in words is "eighty million, nine hundred forty-seven thousand, six hundred eighty".