198214285 has 8 divisors (see below), whose sum is σ = 238300056. Its totient is φ = 158276160.

The previous prime is 198214283. The next prime is 198214297. The reversal of 198214285 is 582412891.

It can be written as a sum of positive squares in 4 ways, for example, as 1261129 + 196953156 = 1123^2 + 14034^2 .

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

It is not a de Polignac number, because 198214285 - 2¹ = 198214283 is a prime.

It is a super-2 number, since 2×198214285² = 78577805556122450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198214283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33934 + ... + 39343.

It is an arithmetic number, because the mean of its divisors is an integer number (29787507).

Almost surely, 2^198214285 is an apocalyptic number.

It is an amenable number.

198214285 is a deficient number, since it is larger than the sum of its proper divisors (40085771).

198214285 is an equidigital number, since it uses as much as digits as its factorization.

198214285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73823.

The product of its digits is 46080, while the sum is 40.

The square root of 198214285 is about 14078.8595063663. The cubic root of 198214285 is about 583.0578543247.

The spelling of 198214285 in words is "one hundred ninety-eight million, two hundred fourteen thousand, two hundred eighty-five".