173742638 has 8 divisors (see below), whose sum is σ = 261452880. Its totient is φ = 86591680.

The previous prime is 173742629. The next prime is 173742643. The reversal of 173742638 is 836247371.

173742638 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 = 173742595 and 173742604.

It is a congruent number.

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, 139043 + ... + 140286.

It is an arithmetic number, because the mean of its divisors is an integer number (32681610).

Almost surely, 2^173742638 is an apocalyptic number.

173742638 is a deficient number, since it is larger than the sum of its proper divisors (87710242).

173742638 is a wasteful number, since it uses less digits than its factorization.

173742638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279642.

The product of its digits is 169344, while the sum is 41.

The square root of 173742638 is about 13181.1470669286. The cubic root of 173742638 is about 558.0016336673.

The spelling of 173742638 in words is "one hundred seventy-three million, seven hundred forty-two thousand, six hundred thirty-eight".