2421930 has 64 divisors (see below), whose sum is σ = 7004160. Its totient is φ = 523584.

The previous prime is 2421919. The next prime is 2421931. The reversal of 2421930 is 391242.

2421930 is digitally balanced in base 2, 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 (21).

It is a junction number, because it is equal to n+sod(n) for n = 2421897 and 2421906.

It is not an unprimeable number, because it can be changed into a prime (2421931) 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 31 ways as a sum of consecutive naturals, for example, 3687 + ... + 4293.

It is an arithmetic number, because the mean of its divisors is an integer number (109440).

2^2421930 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2421930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3502080).

2421930 is an abundant number, since it is smaller than the sum of its proper divisors (4582230).

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

2421930 is a wasteful number, since it uses less digits than its factorization.

2421930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 2421930 is about 1556.2551204735. The cubic root of 2421930 is about 134.2931504429.

The spelling of 2421930 in words is "two million, four hundred twenty-one thousand, nine hundred thirty".