197097040 has 40 divisors (see below), whose sum is σ = 523716480. Its totient is φ = 67575936.

The previous prime is 197097023. The next prime is 197097059. The reversal of 197097040 is 40790791.

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

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 7 ways as a sum of consecutive naturals, for example, 175420 + ... + 176539.

It is an arithmetic number, because the mean of its divisors is an integer number (13092912).

Almost surely, 2^197097040 is an apocalyptic number.

197097040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

197097040 is an abundant number, since it is smaller than the sum of its proper divisors (326619440).

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

197097040 is a wasteful number, since it uses less digits than its factorization.

197097040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351979 (or 351973 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 37.

The square root of 197097040 is about 14039.1253288800. The cubic root of 197097040 is about 581.9603110987.

The spelling of 197097040 in words is "one hundred ninety-seven million, ninety-seven thousand, forty".