2921604 has 24 divisors (see below), whose sum is σ = 7791168. Its totient is φ = 834720.

The previous prime is 2921599. The next prime is 2921617. The reversal of 2921604 is 4061292.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17307 + ... + 17474.

It is an arithmetic number, because the mean of its divisors is an integer number (324632).

2^2921604 is an apocalyptic number.

It is an amenable number.

2921604 is an abundant number, since it is smaller than the sum of its proper divisors (4869564).

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

2921604 is a wasteful number, since it uses less digits than its factorization.

2921604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34795 (or 34793 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 2921604 is about 1709.2700196283. The cubic root of 2921604 is about 142.9575566411.

Adding to 2921604 its reverse (4061292), we get a palindrome (6982896).

The spelling of 2921604 in words is "two million, nine hundred twenty-one thousand, six hundred four".