2002117904 has 30 divisors (see below), whose sum is σ = 3975991614. Its totient is φ = 976083840.

The previous prime is 2002117903. The next prime is 2002117937. The reversal of 2002117904 is 4097112002.

It can be written as a sum of positive squares in only one way, i.e., 1220803600 + 781314304 = 34940^2 + 27952^2 .

It is a super-2 number, since 2×2002117904² = 8016952203034706432, which contains 22 as substring.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2002117903) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1145159 + ... + 1146905.

Almost surely, 2^2002117904 is an apocalyptic number.

It is an amenable number.

2002117904 is a deficient number, since it is larger than the sum of its proper divisors (1973873710).

2002117904 is an frugal number, since it uses more digits than its factorization.

2002117904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3543 (or 1790 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 2002117904 is about 44745.0321711807. The cubic root of 2002117904 is about 1260.3656249758.

Adding to 2002117904 its reverse (4097112002), we get a palindrome (6099229906).

The spelling of 2002117904 in words is "two billion, two million, one hundred seventeen thousand, nine hundred four".