172768838 has 8 divisors (see below), whose sum is σ = 282712680. Its totient is φ = 78531280.

The previous prime is 172768829. The next prime is 172768853. The reversal of 172768838 is 838867271.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3926543 + ... + 3926586.

It is an arithmetic number, because the mean of its divisors is an integer number (35339085).

Almost surely, 2^172768838 is an apocalyptic number.

172768838 is a deficient number, since it is larger than the sum of its proper divisors (109943842).

172768838 is a wasteful number, since it uses less digits than its factorization.

172768838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7853142.

The product of its digits is 903168, while the sum is 50.

The square root of 172768838 is about 13144.1560398528. The cubic root of 172768838 is about 556.9571762635.

The spelling of 172768838 in words is "one hundred seventy-two million, seven hundred sixty-eight thousand, eight hundred thirty-eight".