197041840 has 40 divisors (see below), whose sum is σ = 460461600. Its totient is φ = 78414336.

The previous prime is 197041783. The next prime is 197041861. The reversal of 197041840 is 48140791.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 197041796 and 197041805.

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 7 ways as a sum of consecutive naturals, for example, 9732 + ... + 22108.

It is an arithmetic number, because the mean of its divisors is an integer number (11511540).

Almost surely, 2^197041840 is an apocalyptic number.

197041840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

197041840 is an abundant number, since it is smaller than the sum of its proper divisors (263419760).

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

197041840 is a wasteful number, since it uses less digits than its factorization.

197041840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12589 (or 12583 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 197041840 is about 14037.1592567727. The cubic root of 197041840 is about 581.9059771039.

The spelling of 197041840 in words is "one hundred ninety-seven million, forty-one thousand, eight hundred forty".