197293806 has 80 divisors (see below), whose sum is σ = 475152480. Its totient is φ = 60963840.

The previous prime is 197293799. The next prime is 197293807. The reversal of 197293806 is 608392791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197293807) by changing a digit.

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 39 ways as a sum of consecutive naturals, for example, 195030 + ... + 196038.

It is an arithmetic number, because the mean of its divisors is an integer number (5939406).

Almost surely, 2^197293806 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 197293806, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237576240).

197293806 is an abundant number, since it is smaller than the sum of its proper divisors (277858674).

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

197293806 is a wasteful number, since it uses less digits than its factorization.

197293806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111 (or 1102 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 197293806 is about 14046.1313535080. The cubic root of 197293806 is about 582.1539076435.

The spelling of 197293806 in words is "one hundred ninety-seven million, two hundred ninety-three thousand, eight hundred six".