20098447 has 8 divisors (see below), whose sum is σ = 21839360. Its totient is φ = 18425880.

The previous prime is 20098439. The next prime is 20098451. The reversal of 20098447 is 74489002.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20098447 - 2³ = 20098439 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20098417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16473 + ... + 17650.

It is an arithmetic number, because the mean of its divisors is an integer number (2729920).

Almost surely, 2^20098447 is an apocalyptic number.

20098447 is a deficient number, since it is larger than the sum of its proper divisors (1740913).

20098447 is a wasteful number, since it uses less digits than its factorization.

20098447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34173.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 20098447 is about 4483.1291527236. The cubic root of 20098447 is about 271.8864100025.

The spelling of 20098447 in words is "twenty million, ninety-eight thousand, four hundred forty-seven".