2402780 has 48 divisors (see below), whose sum is σ = 5515776. Its totient is φ = 875520.

The previous prime is 2402773. The next prime is 2402789. The reversal of 2402780 is 872042.

2402780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2402789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12485 + ... + 12675.

It is an arithmetic number, because the mean of its divisors is an integer number (114912).

2^2402780 is an apocalyptic number.

2402780 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 2402780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2757888).

2402780 is an abundant number, since it is smaller than the sum of its proper divisors (3112996).

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

2402780 is a wasteful number, since it uses less digits than its factorization.

2402780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254 (or 252 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 2402780 is about 1550.0903199491. The cubic root of 2402780 is about 133.9382651693.

The spelling of 2402780 in words is "two million, four hundred two thousand, seven hundred eighty".