197129746 has 8 divisors (see below), whose sum is σ = 322575984. Its totient is φ = 89604420.

The previous prime is 197129729. The next prime is 197129753. The reversal of 197129746 is 647921791.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 197129696 and 197129705.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4480200 + ... + 4480243.

It is an arithmetic number, because the mean of its divisors is an integer number (40321998).

Almost surely, 2^197129746 is an apocalyptic number.

197129746 is a deficient number, since it is larger than the sum of its proper divisors (125446238).

197129746 is a wasteful number, since it uses less digits than its factorization.

197129746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8960456.

The product of its digits is 190512, while the sum is 46.

The square root of 197129746 is about 14040.2900967181. The cubic root of 197129746 is about 581.9924992046.

The spelling of 197129746 in words is "one hundred ninety-seven million, one hundred twenty-nine thousand, seven hundred forty-six".