2520020 has 12 divisors (see below), whose sum is σ = 5292084. Its totient is φ = 1008000.

The previous prime is 2520017. The next prime is 2520031. The reversal of 2520020 is 200252.

It can be written as a sum of positive squares in 2 ways, for example, as 1012036 + 1507984 = 1006^2 + 1228^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2519983 and 2520010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62981 + ... + 63020.

It is an arithmetic number, because the mean of its divisors is an integer number (441007).

2^2520020 is an apocalyptic number.

2520020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2520020 is an abundant number, since it is smaller than the sum of its proper divisors (2772064).

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

2520020 is a wasteful number, since it uses less digits than its factorization.

2520020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126010 (or 126008 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 11.

The square root of 2520020 is about 1587.4570860341. The cubic root of 2520020 is about 136.0822023230.

Adding to 2520020 its reverse (200252), we get a palindrome (2720272).

It can be divided in two parts, 25 and 20020, that multiplied together give a triangular number (500500 = T₁₀₀₀).

The spelling of 2520020 in words is "two million, five hundred twenty thousand, twenty".