2421760 has 88 divisors (see below), whose sum is σ = 6484896. Its totient is φ = 860160.

The previous prime is 2421743. The next prime is 2421767. The reversal of 2421760 is 671242.

It is a tau number, because it is divible by the number of its divisors (88).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2421767) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 56299 + ... + 56341.

It is an arithmetic number, because the mean of its divisors is an integer number (73692).

2^2421760 is an apocalyptic number.

2421760 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 2421760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3242448).

2421760 is an abundant number, since it is smaller than the sum of its proper divisors (4063136).

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

2421760 is a wasteful number, since it uses less digits than its factorization.

2421760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79 (or 61 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 2421760 is about 1556.2005012208. The cubic root of 2421760 is about 134.2900082699.

It can be divided in two parts, 242 and 1760, that added together give a palindrome (2002).

The spelling of 2421760 in words is "two million, four hundred twenty-one thousand, seven hundred sixty".