20845102 has 8 divisors (see below), whose sum is σ = 31399200. Its totient is φ = 10378704.

The previous prime is 20845091. The next prime is 20845129. The reversal of 20845102 is 20154802.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21327 + ... + 22282.

It is an arithmetic number, because the mean of its divisors is an integer number (3924900).

Almost surely, 2^20845102 is an apocalyptic number.

20845102 is a deficient number, since it is larger than the sum of its proper divisors (10554098).

20845102 is a wasteful number, since it uses less digits than its factorization.

20845102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43850.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 20845102 is about 4565.6436567038. The cubic root of 20845102 is about 275.2124066963.

Adding to 20845102 its reverse (20154802), we get a palindrome (40999904).

The spelling of 20845102 in words is "twenty million, eight hundred forty-five thousand, one hundred two".