2361820 has 24 divisors (see below), whose sum is σ = 4989600. Its totient is φ = 939072.

The previous prime is 2361809. The next prime is 2361823. The reversal of 2361820 is 281632.

It is a junction number, because it is equal to n+sod(n) for n = 2361791 and 2361800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2361823) 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, 5161 + ... + 5599.

It is an arithmetic number, because the mean of its divisors is an integer number (207900).

2^2361820 is an apocalyptic number.

2361820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2361820 is an abundant number, since it is smaller than the sum of its proper divisors (2627780).

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

2361820 is a wasteful number, since it uses less digits than its factorization.

2361820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 717 (or 715 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 2361820 is about 1536.8213949578. The cubic root of 2361820 is about 133.1728207342.

The spelling of 2361820 in words is "two million, three hundred sixty-one thousand, eight hundred twenty".