2081280 has 80 divisors (see below), whose sum is σ = 6678144. Its totient is φ = 552960.

The previous prime is 2081273. The next prime is 2081281. The reversal of 2081280 is 821802.

It is a tau number, because it is divible by the number of its divisors (80).

It is a nialpdrome in base 8.

It is not an unprimeable number, because it can be changed into a prime (2081281) 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, 7545 + ... + 7815.

2^2081280 is an apocalyptic number.

2081280 is a gapful number since it is divisible by the number (20) 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 2081280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3339072).

2081280 is an abundant number, since it is smaller than the sum of its proper divisors (4596864).

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

2081280 is an equidigital number, since it uses as much as digits as its factorization.

2081280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297 (or 281 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

The square root of 2081280 is about 1442.6642020928. The cubic root of 2081280 is about 127.6762652408.

The spelling of 2081280 in words is "two million, eighty-one thousand, two hundred eighty".