20098172 has 12 divisors (see below), whose sum is σ = 35339976. Its totient is φ = 10001040.

The previous prime is 20098129. The next prime is 20098193. The reversal of 20098172 is 27189002.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11063 + ... + 12750.

It is an arithmetic number, because the mean of its divisors is an integer number (2944998).

Almost surely, 2^20098172 is an apocalyptic number.

It is an amenable number.

20098172 is a deficient number, since it is larger than the sum of its proper divisors (15241804).

20098172 is a wasteful number, since it uses less digits than its factorization.

20098172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24028 (or 24026 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 20098172 is about 4483.0984820769. The cubic root of 20098172 is about 271.8851699547.

The spelling of 20098172 in words is "twenty million, ninety-eight thousand, one hundred seventy-two".