197146026 has 144 divisors (see below), whose sum is σ = 547415232. Its totient is φ = 50181120.

The previous prime is 197146021. The next prime is 197146039. The reversal of 197146026 is 620641791.

197146026 is a `hidden beast` number, since 197 + 1 + 460 + 2 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197146021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1021386 + ... + 1021578.

Almost surely, 2^197146026 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 197146026, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (273707616).

197146026 is an abundant number, since it is smaller than the sum of its proper divisors (350269206).

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

197146026 is a wasteful number, since it uses less digits than its factorization.

197146026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297 (or 283 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 197146026 is about 14040.8698448494. The cubic root of 197146026 is about 582.0085200864.

The spelling of 197146026 in words is "one hundred ninety-seven million, one hundred forty-six thousand, twenty-six".