197213824 has 32 divisors (see below), whose sum is σ = 402035040. Its totient is φ = 96311040.

The previous prime is 197213801. The next prime is 197213827. The reversal of 197213824 is 428312791.

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (197213827) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12412 + ... + 23419.

It is an arithmetic number, because the mean of its divisors is an integer number (12563595).

Almost surely, 2^197213824 is an apocalyptic number.

It is an amenable number.

197213824 is an abundant number, since it is smaller than the sum of its proper divisors (204821216).

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

197213824 is an equidigital number, since it uses as much as digits as its factorization.

197213824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35888 (or 35876 counting only the distinct ones).

The product of its digits is 24192, while the sum is 37.

The square root of 197213824 is about 14043.2839464279. The cubic root of 197213824 is about 582.0752295065.

The spelling of 197213824 in words is "one hundred ninety-seven million, two hundred thirteen thousand, eight hundred twenty-four".