20150198 has 8 divisors (see below), whose sum is σ = 30537192. Its totient is φ = 9971136.

The previous prime is 20150197. The next prime is 20150227. The reversal of 20150198 is 89105102.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20150197) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51740 + ... + 52127.

It is an arithmetic number, because the mean of its divisors is an integer number (3817149).

Almost surely, 2^20150198 is an apocalyptic number.

20150198 is a deficient number, since it is larger than the sum of its proper divisors (10386994).

20150198 is a wasteful number, since it uses less digits than its factorization.

20150198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103966.

The product of its (nonzero) digits is 720, while the sum is 26.

The square root of 20150198 is about 4488.8971919615. The cubic root of 20150198 is about 272.1195678902.

The spelling of 20150198 in words is "twenty million, one hundred fifty thousand, one hundred ninety-eight".