2805421004 has 6 divisors (see below), whose sum is σ = 4909486764. Its totient is φ = 1402710500.

The previous prime is 2805421001. The next prime is 2805421013. The reversal of 2805421004 is 4001245082.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2805421001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 350677622 + ... + 350677629.

It is an arithmetic number, because the mean of its divisors is an integer number (818247794).

Almost surely, 2^2805421004 is an apocalyptic number.

It is an amenable number.

2805421004 is a deficient number, since it is larger than the sum of its proper divisors (2104065760).

2805421004 is a wasteful number, since it uses less digits than its factorization.

2805421004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701355255 (or 701355253 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 26.

The square root of 2805421004 is about 52966.2251250738. The cubic root of 2805421004 is about 1410.3687656088.

Adding to 2805421004 its reverse (4001245082), we get a palindrome (6806666086).

The spelling of 2805421004 in words is "two billion, eight hundred five million, four hundred twenty-one thousand, four".