2402820 has 72 divisors (see below), whose sum is σ = 8334144. Its totient is φ = 548928.

The previous prime is 2402819. The next prime is 2402837. The reversal of 2402820 is 282042.

2402820 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

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 = 2402793 and 2402802.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 307 + ... + 2213.

It is an arithmetic number, because the mean of its divisors is an integer number (115752).

2^2402820 is an apocalyptic number.

2402820 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 2402820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4167072).

2402820 is an abundant number, since it is smaller than the sum of its proper divisors (5931324).

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

2402820 is a wasteful number, since it uses less digits than its factorization.

2402820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1929 (or 1924 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 2402820 is about 1550.1032223694. The cubic root of 2402820 is about 133.9390084057.

Adding to 2402820 its reverse (282042), we get a palindrome (2684862).

The spelling of 2402820 in words is "two million, four hundred two thousand, eight hundred twenty".