20869102 has 4 divisors (see below), whose sum is σ = 31303656. Its totient is φ = 10434550.

The previous prime is 20869097. The next prime is 20869103. The reversal of 20869102 is 20196802.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20869103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5217274 + ... + 5217277.

It is an arithmetic number, because the mean of its divisors is an integer number (7825914).

Almost surely, 2^20869102 is an apocalyptic number.

20869102 is a deficient number, since it is larger than the sum of its proper divisors (10434554).

20869102 is a wasteful number, since it uses less digits than its factorization.

20869102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10434553.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 20869102 is about 4568.2712266239. The cubic root of 20869102 is about 275.3179880851.

The spelling of 20869102 in words is "twenty million, eight hundred sixty-nine thousand, one hundred two".