2021480 has 32 divisors (see below), whose sum is σ = 4604040. Its totient is φ = 798720.

The previous prime is 2021471. The next prime is 2021489. The reversal of 2021480 is 841202.

It is an interprime number because it is at equal distance from previous prime (2021471) and next prime (2021489).

It can be written as a sum of positive squares in 4 ways, for example, as 1378276 + 643204 = 1174^2 + 802^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021489) 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, 3620 + ... + 4140.

2^2021480 is an apocalyptic number.

2021480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2021480 is an abundant number, since it is smaller than the sum of its proper divisors (2582560).

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

2021480 is a wasteful number, since it uses less digits than its factorization.

2021480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629 (or 625 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 2021480 is about 1421.7876072044. The cubic root of 2021480 is about 126.4415515265.

Adding to 2021480 its reverse (841202), we get a palindrome (2862682).

The spelling of 2021480 in words is "two million, twenty-one thousand, four hundred eighty".