197895040 has 128 divisors (see below), whose sum is σ = 546001920. Its totient is φ = 67184640.

The previous prime is 197895031. The next prime is 197895053. The reversal of 197895040 is 40598791.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 730105 + ... + 730375.

It is an arithmetic number, because the mean of its divisors is an integer number (4265640).

Almost surely, 2^197895040 is an apocalyptic number.

197895040 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 197895040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (273000960).

197895040 is an abundant number, since it is smaller than the sum of its proper divisors (348106880).

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

197895040 is a wasteful number, since it uses less digits than its factorization.

197895040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460 (or 448 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 197895040 is about 14067.5171938761. The cubic root of 197895040 is about 582.7446607423.

The spelling of 197895040 in words is "one hundred ninety-seven million, eight hundred ninety-five thousand, forty".