2002004478 has 32 divisors (see below), whose sum is σ = 4450360320. Its totient is φ = 667115640.

The previous prime is 2002004471. The next prime is 2002004489. The reversal of 2002004478 is 8744002002.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2002004471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 323473 + ... + 329603.

It is an arithmetic number, because the mean of its divisors is an integer number (139073760).

Almost surely, 2^2002004478 is an apocalyptic number.

2002004478 is an abundant number, since it is smaller than the sum of its proper divisors (2448355842).

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

2002004478 is a wasteful number, since it uses less digits than its factorization.

2002004478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12189 (or 12183 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 27.

The square root of 2002004478 is about 44743.7646829142. The cubic root of 2002004478 is about 1260.3418233587.

The spelling of 2002004478 in words is "two billion, two million, four thousand, four hundred seventy-eight".