197902 has 8 divisors (see below), whose sum is σ = 302616. Its totient is φ = 97032.

The previous prime is 197893. The next prime is 197909. The reversal of 197902 is 209791.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 828 + ... + 1039.

It is an arithmetic number, because the mean of its divisors is an integer number (37827).

2¹⁹⁷⁹⁰² is an apocalyptic number.

197902 is a deficient number, since it is larger than the sum of its proper divisors (104714).

197902 is a wasteful number, since it uses less digits than its factorization.

197902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1922.

The product of its (nonzero) digits is 1134, while the sum is 28.

The square root of 197902 is about 444.8617762856. The cubic root of 197902 is about 58.2751492403.

It can be divided in two parts, 19 and 7902, that added together give a square (7921 = 89²).

The spelling of 197902 in words is "one hundred ninety-seven thousand, nine hundred two".