197535990 has 32 divisors (see below), whose sum is σ = 474575616. Its totient is φ = 52621920.

The previous prime is 197535967. The next prime is 197536019. The reversal of 197535990 is 99535791.

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, 32319 + ... + 37941.

It is an arithmetic number, because the mean of its divisors is an integer number (14830488).

Almost surely, 2^197535990 is an apocalyptic number.

197535990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

197535990 is an abundant number, since it is smaller than the sum of its proper divisors (277039626).

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

197535990 is a wasteful number, since it uses less digits than its factorization.

197535990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6804.

The product of its (nonzero) digits is 382725, while the sum is 48.

The square root of 197535990 is about 14054.7497309628. The cubic root of 197535990 is about 582.3920139733.

The spelling of 197535990 in words is "one hundred ninety-seven million, five hundred thirty-five thousand, nine hundred ninety".