197632838 has 16 divisors (see below), whose sum is σ = 326047680. Its totient is φ = 89273856.

The previous prime is 197632829. The next prime is 197632867. The reversal of 197632838 is 838236791.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a junction number, because it is equal to n+sod(n) for n = 197632792 and 197632801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79643 + ... + 82086.

It is an arithmetic number, because the mean of its divisors is an integer number (20377980).

Almost surely, 2^197632838 is an apocalyptic number.

197632838 is a deficient number, since it is larger than the sum of its proper divisors (128414842).

197632838 is a wasteful number, since it uses less digits than its factorization.

197632838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161791.

The product of its digits is 435456, while the sum is 47.

The square root of 197632838 is about 14058.1946920648. The cubic root of 197632838 is about 582.4871768623.

The spelling of 197632838 in words is "one hundred ninety-seven million, six hundred thirty-two thousand, eight hundred thirty-eight".