20198241 has 40 divisors (see below), whose sum is σ = 35235200. Its totient is φ = 11525976.

The previous prime is 20198231. The next prime is 20198251. The reversal of 20198241 is 14289102.

It is an interprime number because it is at equal distance from previous prime (20198231) and next prime (20198251).

It is not a de Polignac number, because 20198241 - 2¹⁵ = 20165473 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (20198201) by changing a digit.

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 39 ways as a sum of consecutive naturals, for example, 27420 + ... + 28146.

It is an arithmetic number, because the mean of its divisors is an integer number (880880).

Almost surely, 2^20198241 is an apocalyptic number.

20198241 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20198241 is a deficient number, since it is larger than the sum of its proper divisors (15036959).

20198241 is an frugal number, since it uses more digits than its factorization.

20198241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 760 (or 737 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 20198241 is about 4494.2453204070. The cubic root of 20198241 is about 272.3356627734.

The spelling of 20198241 in words is "twenty million, one hundred ninety-eight thousand, two hundred forty-one".