197304813440 has 128 divisors (see below), whose sum is σ = 543001406400. Its totient is φ = 67153379328.

The previous prime is 197304813413. The next prime is 197304813457. The reversal of 197304813440 is 44318403791.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a junction number, because it is equal to n+sod(n) for n = 197304813391 and 197304813400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 453026 + ... + 774494.

Almost surely, 2^197304813440 is an apocalyptic number.

197304813440 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 197304813440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (271500703200).

197304813440 is an abundant number, since it is smaller than the sum of its proper divisors (345696592960).

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

197304813440 is a wasteful number, since it uses less digits than its factorization.

197304813440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321632 (or 321620 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 44.

The spelling of 197304813440 in words is "one hundred ninety-seven billion, three hundred four million, eight hundred thirteen thousand, four hundred forty".