197216790 has 16 divisors (see below), whose sum is σ = 473320368. Its totient is φ = 52591136.

The previous prime is 197216777. The next prime is 197216801. The reversal of 197216790 is 97612791.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3286917 + ... + 3286976.

It is an arithmetic number, because the mean of its divisors is an integer number (29582523).

Almost surely, 2^197216790 is an apocalyptic number.

197216790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

197216790 is an abundant number, since it is smaller than the sum of its proper divisors (276103578).

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

197216790 is a wasteful number, since it uses less digits than its factorization.

197216790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6573903.

The product of its (nonzero) digits is 47628, while the sum is 42.

The square root of 197216790 is about 14043.3895481112. The cubic root of 197216790 is about 582.0781475347.

The spelling of 197216790 in words is "one hundred ninety-seven million, two hundred sixteen thousand, seven hundred ninety".