2004402002 has 8 divisors (see below), whose sum is σ = 3006795276. Its totient is φ = 1002136912.

The previous prime is 2004401947. The next prime is 2004402067. The reversal of 2004402002 is 2002044002.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1934328361 + 70073641 = 43981^2 + 8371^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35648 + ... + 72660.

Almost surely, 2^2004402002 is an apocalyptic number.

2004402002 is a deficient number, since it is larger than the sum of its proper divisors (1002393274).

2004402002 is a wasteful number, since it uses less digits than its factorization.

2004402002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64092.

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 2004402002 is about 44770.5483772535. The cubic root of 2004402002 is about 1260.8447350456.

Adding to 2004402002 its reverse (2002044002), we get a palindrome (4006446004).

The spelling of 2004402002 in words is "two billion, four million, four hundred two thousand, two".