80856480 has 48 divisors (see below), whose sum is σ = 254699424. Its totient is φ = 21561600.

The previous prime is 80856473. The next prime is 80856481. The reversal of 80856480 is 8465808.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (80856481) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 83746 + ... + 84705.

It is an arithmetic number, because the mean of its divisors is an integer number (5306238).

Almost surely, 2^80856480 is an apocalyptic number.

80856480 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

80856480 is an abundant number, since it is smaller than the sum of its proper divisors (173842944).

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

80856480 is a wasteful number, since it uses less digits than its factorization.

80856480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168469 (or 168461 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 39.

The square root of 80856480 is about 8992.0231316428. The cubic root of 80856480 is about 432.4191747568.

The spelling of 80856480 in words is "eighty million, eight hundred fifty-six thousand, four hundred eighty".