197844720 has 160 divisors (see below), whose sum is σ = 661267200. Its totient is φ = 48771072.

The previous prime is 197844709. The next prime is 197844749. The reversal of 197844720 is 27448791.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 195576 + ... + 196584.

It is an arithmetic number, because the mean of its divisors is an integer number (4132920).

Almost surely, 2^197844720 is an apocalyptic number.

197844720 is a gapful number since it is divisible by the number (10) 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 197844720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (330633600).

197844720 is an abundant number, since it is smaller than the sum of its proper divisors (463422480).

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

197844720 is a wasteful number, since it uses less digits than its factorization.

197844720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1087 (or 1081 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 42.

The square root of 197844720 is about 14065.7285627158. The cubic root of 197844720 is about 582.6952638547.

The spelling of 197844720 in words is "one hundred ninety-seven million, eight hundred forty-four thousand, seven hundred twenty".