197399828 has 12 divisors (see below), whose sum is σ = 349823040. Its totient is φ = 97450392.

The previous prime is 197399827. The next prime is 197399849. The reversal of 197399828 is 828993791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197399827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 312026 + ... + 312657.

It is an arithmetic number, because the mean of its divisors is an integer number (29151920).

Almost surely, 2^197399828 is an apocalyptic number.

It is an amenable number.

197399828 is a deficient number, since it is larger than the sum of its proper divisors (152423212).

197399828 is a wasteful number, since it uses less digits than its factorization.

197399828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624766 (or 624764 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 56.

The square root of 197399828 is about 14049.9049107103. The cubic root of 197399828 is about 582.2581685091.

The spelling of 197399828 in words is "one hundred ninety-seven million, three hundred ninety-nine thousand, eight hundred twenty-eight".