20001902 has 8 divisors (see below), whose sum is σ = 30160512. Its totient is φ = 9948400.

The previous prime is 20001901. The next prime is 20001929. The reversal of 20001902 is 20910002.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25799 + ... + 26562.

It is an arithmetic number, because the mean of its divisors is an integer number (3770064).

Almost surely, 2^20001902 is an apocalyptic number.

20001902 is a deficient number, since it is larger than the sum of its proper divisors (10158610).

20001902 is a wasteful number, since it uses less digits than its factorization.

20001902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52554.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 20001902 is about 4472.3486000087. The cubic root of 20001902 is about 271.4503660906.

Adding to 20001902 its reverse (20910002), we get a palindrome (40911904).

The spelling of 20001902 in words is "twenty million, one thousand, nine hundred two".