2002287878 has 4 divisors (see below), whose sum is σ = 3003431820. Its totient is φ = 1001143938.

The previous prime is 2002287869. The next prime is 2002287907. The reversal of 2002287878 is 8787822002.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500571968 + ... + 500571971.

It is an arithmetic number, because the mean of its divisors is an integer number (750857955).

Almost surely, 2^2002287878 is an apocalyptic number.

2002287878 is a deficient number, since it is larger than the sum of its proper divisors (1001143942).

2002287878 is a wasteful number, since it uses less digits than its factorization.

2002287878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001143941.

The product of its (nonzero) digits is 200704, while the sum is 44.

The square root of 2002287878 is about 44746.9314925616. The cubic root of 2002287878 is about 1260.4012910945.

The spelling of 2002287878 in words is "two billion, two million, two hundred eighty-seven thousand, eight hundred seventy-eight".