196726387 has 8 divisors (see below), whose sum is σ = 231119280. Its totient is φ = 165084960.

The previous prime is 196726381. The next prime is 196726391. The reversal of 196726387 is 783627691.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 196726387 - 2¹⁹ = 196202099 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 196726387.

It is not an unprimeable number, because it can be changed into a prime (196726381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 687712 + ... + 687997.

It is an arithmetic number, because the mean of its divisors is an integer number (28889910).

Almost surely, 2^196726387 is an apocalyptic number.

196726387 is a deficient number, since it is larger than the sum of its proper divisors (34392893).

196726387 is a wasteful number, since it uses less digits than its factorization.

196726387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1375733.

The product of its digits is 762048, while the sum is 49.

The square root of 196726387 is about 14025.9184013026. The cubic root of 196726387 is about 581.5952782324.

The spelling of 196726387 in words is "one hundred ninety-six million, seven hundred twenty-six thousand, three hundred eighty-seven".