197201216 has 42 divisors (see below), whose sum is σ = 396784830. Its totient is φ = 97242112.

The previous prime is 197201201. The next prime is 197201269. The reversal of 197201216 is 612102791.

It can be written as a sum of positive squares in 3 ways, for example, as 1201216 + 196000000 = 1096^2 + 14000^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 506750 + ... + 507138.

Almost surely, 2^197201216 is an apocalyptic number.

197201216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 197201216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (198392415).

197201216 is an abundant number, since it is smaller than the sum of its proper divisors (199583614).

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

197201216 is an frugal number, since it uses more digits than its factorization.

197201216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579 (or 480 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 29.

The square root of 197201216 is about 14042.8350414010. The cubic root of 197201216 is about 582.0628251008.

The spelling of 197201216 in words is "one hundred ninety-seven million, two hundred one thousand, two hundred sixteen".