20486198 has 16 divisors (see below), whose sum is σ = 31531680. Its totient is φ = 9979200.

The previous prime is 20486177. The next prime is 20486203. The reversal of 20486198 is 89168402.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11828 + ... + 13448.

It is an arithmetic number, because the mean of its divisors is an integer number (1970730).

Almost surely, 2^20486198 is an apocalyptic number.

20486198 is a deficient number, since it is larger than the sum of its proper divisors (11045482).

20486198 is a wasteful number, since it uses less digits than its factorization.

20486198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1783.

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 20486198 is about 4526.1681365146. The cubic root of 20486198 is about 273.6237487650.

The spelling of 20486198 in words is "twenty million, four hundred eighty-six thousand, one hundred ninety-eight".