197197828 has 24 divisors (see below), whose sum is σ = 353911712. Its totient is φ = 96090624.

The previous prime is 197197801. The next prime is 197197843. The reversal of 197197828 is 828791791.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98251 + ... + 100237.

Almost surely, 2^197197828 is an apocalyptic number.

It is an amenable number.

197197828 is a deficient number, since it is larger than the sum of its proper divisors (156713884).

197197828 is a wasteful number, since it uses less digits than its factorization.

197197828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2611 (or 2609 counting only the distinct ones).

The product of its digits is 508032, while the sum is 52.

The square root of 197197828 is about 14042.7144099707. The cubic root of 197197828 is about 582.0594917201.

It can be divided in two parts, 197197 and 828, that added together give a square (198025 = 445²).

The spelling of 197197828 in words is "one hundred ninety-seven million, one hundred ninety-seven thousand, eight hundred twenty-eight".