197865444 has 48 divisors (see below), whose sum is σ = 531216000. Its totient is φ = 56150016.

The previous prime is 197865439. The next prime is 197865457. The reversal of 197865444 is 444568791.

It is a junction number, because it is equal to n+sod(n) for n = 197865393 and 197865402.

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 15 ways as a sum of consecutive naturals, for example, 4612 + ... + 20420.

It is an arithmetic number, because the mean of its divisors is an integer number (11067000).

Almost surely, 2^197865444 is an apocalyptic number.

197865444 is a gapful number since it is divisible by the number (14) 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 197865444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (265608000).

197865444 is an abundant number, since it is smaller than the sum of its proper divisors (333350556).

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

197865444 is a wasteful number, since it uses less digits than its factorization.

197865444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15972 (or 15970 counting only the distinct ones).

The product of its digits is 967680, while the sum is 48.

The square root of 197865444 is about 14066.4652276256. The cubic root of 197865444 is about 582.7156086905.

The spelling of 197865444 in words is "one hundred ninety-seven million, eight hundred sixty-five thousand, four hundred forty-four".