2021280 has 48 divisors (see below), whose sum is σ = 6368544. Its totient is φ = 538880.

The previous prime is 2021251. The next prime is 2021291. The reversal of 2021280 is 821202.

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

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1626 + ... + 2585.

It is an arithmetic number, because the mean of its divisors is an integer number (132678).

2^2021280 is an apocalyptic number.

2021280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2021280 is an abundant number, since it is smaller than the sum of its proper divisors (4347264).

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

2021280 is a wasteful number, since it uses less digits than its factorization.

2021280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4229 (or 4221 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 2021280 is about 1421.7172714714. The cubic root of 2021280 is about 126.4373814556.

Adding to 2021280 its reverse (821202), we get a palindrome (2842482).

The spelling of 2021280 in words is "two million, twenty-one thousand, two hundred eighty".