20900194 has 8 divisors (see below), whose sum is σ = 35828928. Its totient is φ = 8957220.

The previous prime is 20900189. The next prime is 20900221. The reversal of 20900194 is 49100902.

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

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, 746422 + ... + 746449.

It is an arithmetic number, because the mean of its divisors is an integer number (4478616).

Almost surely, 2^20900194 is an apocalyptic number.

20900194 is a deficient number, since it is larger than the sum of its proper divisors (14928734).

20900194 is a wasteful number, since it uses less digits than its factorization.

20900194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1492880.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 20900194 is about 4571.6729979298. The cubic root of 20900194 is about 275.4546484813.

The spelling of 20900194 in words is "twenty million, nine hundred thousand, one hundred ninety-four".