2541820 has 24 divisors (see below), whose sum is σ = 5619600. Its totient is φ = 963072.

The previous prime is 2541817. The next prime is 2541829. The reversal of 2541820 is 281452.

It is a junction number, because it is equal to n+sod(n) for n = 2541791 and 2541800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2541829) 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, 2965 + ... + 3724.

It is an arithmetic number, because the mean of its divisors is an integer number (234150).

2^2541820 is an apocalyptic number.

2541820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2541820 is an abundant number, since it is smaller than the sum of its proper divisors (3077780).

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

2541820 is a wasteful number, since it uses less digits than its factorization.

2541820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6717 (or 6715 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 2541820 is about 1594.3086275875. The cubic root of 2541820 is about 136.4734794420.

The spelling of 2541820 in words is "two million, five hundred forty-one thousand, eight hundred twenty".