20102104 has 32 divisors (see below), whose sum is σ = 42541200. Its totient is φ = 8821120.

The previous prime is 20102099. The next prime is 20102111. The reversal of 20102104 is 40120102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1387 + ... + 6490.

Almost surely, 2^20102104 is an apocalyptic number.

It is an amenable number.

20102104 is an abundant number, since it is smaller than the sum of its proper divisors (22439096).

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

20102104 is a wasteful number, since it uses less digits than its factorization.

20102104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7923 (or 7919 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 20102104 is about 4483.5369966133. The cubic root of 20102104 is about 271.9028993081.

Adding to 20102104 its reverse (40120102), we get a palindrome (60222206).

It can be divided in two parts, 2010 and 2104, that added together give a palindrome (4114).

The spelling of 20102104 in words is "twenty million, one hundred two thousand, one hundred four".