20426198 has 8 divisors (see below), whose sum is σ = 32996208. Its totient is φ = 9427464.

The previous prime is 20426191. The next prime is 20426201. The reversal of 20426198 is 89162402.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20426191) 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, 392786 + ... + 392837.

It is an arithmetic number, because the mean of its divisors is an integer number (4124526).

Almost surely, 2^20426198 is an apocalyptic number.

20426198 is a deficient number, since it is larger than the sum of its proper divisors (12570010).

20426198 is a wasteful number, since it uses less digits than its factorization.

20426198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 785638.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 20426198 is about 4519.5351530882. The cubic root of 20426198 is about 273.3563577009.

The spelling of 20426198 in words is "twenty million, four hundred twenty-six thousand, one hundred ninety-eight".