20342198 has 16 divisors (see below), whose sum is σ = 32425920. Its totient is φ = 9543816.

The previous prime is 20342177. The next prime is 20342209. The reversal of 20342198 is 89124302.

It is a self number, because there is not a number n which added to its sum of digits gives 20342198.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1565 + ... + 6567.

It is an arithmetic number, because the mean of its divisors is an integer number (2026620).

Almost surely, 2^20342198 is an apocalyptic number.

20342198 is a deficient number, since it is larger than the sum of its proper divisors (12083722).

20342198 is a wasteful number, since it uses less digits than its factorization.

20342198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5131.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 20342198 is about 4510.2325882376. The cubic root of 20342198 is about 272.9811290833.

The spelling of 20342198 in words is "twenty million, three hundred forty-two thousand, one hundred ninety-eight".