20072198 has 8 divisors (see below), whose sum is σ = 30160200. Its totient is φ = 10018800.

The previous prime is 20072191. The next prime is 20072203. The reversal of 20072198 is 89127002.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 20072198.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20072191) 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, 7148 + ... + 9551.

It is an arithmetic number, because the mean of its divisors is an integer number (3770025).

Almost surely, 2^20072198 is an apocalyptic number.

20072198 is a deficient number, since it is larger than the sum of its proper divisors (10088002).

20072198 is a wasteful number, since it uses less digits than its factorization.

20072198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17302.

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

The square root of 20072198 is about 4480.2006651488. The cubic root of 20072198 is about 271.7679952887.

The spelling of 20072198 in words is "twenty million, seventy-two thousand, one hundred ninety-eight".