213570198 has 24 divisors (see below), whose sum is σ = 463086936. Its totient is φ = 71136000.

The previous prime is 213570173. The next prime is 213570199. The reversal of 213570198 is 891075312.

It is a super-2 number, since 2×213570198² = 91224458947518408, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213570199) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25113 + ... + 32523.

It is an arithmetic number, because the mean of its divisors is an integer number (19295289).

Almost surely, 2^213570198 is an apocalyptic number.

213570198 is an abundant number, since it is smaller than the sum of its proper divisors (249516738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213570198 is a wasteful number, since it uses less digits than its factorization.

213570198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9020 (or 9017 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 213570198 is about 14614.0411248908. The cubic root of 213570198 is about 597.7416940881.

The spelling of 213570198 in words is "two hundred thirteen million, five hundred seventy thousand, one hundred ninety-eight".