20398174 has 8 divisors (see below), whose sum is σ = 31424328. Its totient is φ = 9923400.

The previous prime is 20398139. The next prime is 20398193. The reversal of 20398174 is 47189302.

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

It is a congruent number.

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, 137752 + ... + 137899.

It is an arithmetic number, because the mean of its divisors is an integer number (3928041).

Almost surely, 2^20398174 is an apocalyptic number.

20398174 is a deficient number, since it is larger than the sum of its proper divisors (11026154).

20398174 is a wasteful number, since it uses less digits than its factorization.

20398174 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275690.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 20398174 is about 4516.4337701332. The cubic root of 20398174 is about 273.2312888299.

The spelling of 20398174 in words is "twenty million, three hundred ninety-eight thousand, one hundred seventy-four".