197383920 has 40 divisors (see below), whose sum is σ = 611890896. Its totient is φ = 52635648.

The previous prime is 197383903. The next prime is 197383931. The reversal of 197383920 is 29383791.

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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 410977 + ... + 411456.

Almost surely, 2^197383920 is an apocalyptic number.

197383920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

197383920 is an abundant number, since it is smaller than the sum of its proper divisors (414506976).

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

197383920 is a wasteful number, since it uses less digits than its factorization.

197383920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 822449 (or 822443 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 197383920 is about 14049.3387744762. The cubic root of 197383920 is about 582.2425271382.

The spelling of 197383920 in words is "one hundred ninety-seven million, three hundred eighty-three thousand, nine hundred twenty".