2680020 has 96 divisors (see below), whose sum is σ = 9542400. Its totient is φ = 611712.

The previous prime is 2680009. The next prime is 2680031. The reversal of 2680020 is 200862.

It is an interprime number because it is at equal distance from previous prime (2680009) and next prime (2680031).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2679975 and 2680002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3426 + ... + 4134.

It is an arithmetic number, because the mean of its divisors is an integer number (99400).

2^2680020 is an apocalyptic number.

2680020 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 2680020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4771200).

2680020 is an abundant number, since it is smaller than the sum of its proper divisors (6862380).

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

2680020 is a wasteful number, since it uses less digits than its factorization.

2680020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 734 (or 726 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 2680020 is about 1637.0766628353. The cubic root of 2680020 is about 138.9033366896.

Adding to 2680020 its reverse (200862), we get a palindrome (2880882).

The spelling of 2680020 in words is "two million, six hundred eighty thousand, twenty".