2421604 has 6 divisors (see below), whose sum is σ = 4237814. Its totient is φ = 1210800.

The previous prime is 2421593. The next prime is 2421641. The reversal of 2421604 is 4061242.

2421604 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 2096704 + 324900 = 1448^2 + 570^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 302697 + ... + 302704.

2^2421604 is an apocalyptic number.

It is an amenable number.

2421604 is a deficient number, since it is larger than the sum of its proper divisors (1816210).

2421604 is a wasteful number, since it uses less digits than its factorization.

2421604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605405 (or 605403 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 2421604 is about 1556.1503783375. The cubic root of 2421604 is about 134.2871247346.

Adding to 2421604 its reverse (4061242), we get a palindrome (6482846).

It can be divided in two parts, 2421 and 604, that added together give a square (3025 = 55²).

The spelling of 2421604 in words is "two million, four hundred twenty-one thousand, six hundred four".