197039856 has 80 divisors (see below), whose sum is σ = 550388384. Its totient is φ = 60383232.

The previous prime is 197039819. The next prime is 197039879. The reversal of 197039856 is 658930791.

It is a Harshad number since it is a multiple of its sum of digits (48).

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 15 ways as a sum of consecutive naturals, for example, 209820 + ... + 210756.

Almost surely, 2^197039856 is an apocalyptic number.

197039856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 197039856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (275194192).

197039856 is an abundant number, since it is smaller than the sum of its proper divisors (353348528).

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

197039856 is a wasteful number, since it uses less digits than its factorization.

197039856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1298 (or 1292 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 48.

The square root of 197039856 is about 14037.0885870254. The cubic root of 197039856 is about 581.9040240410.

The spelling of 197039856 in words is "one hundred ninety-seven million, thirty-nine thousand, eight hundred fifty-six".