172871746 has 8 divisors (see below), whose sum is σ = 261025344. Its totient is φ = 85863300.

The previous prime is 172871729. The next prime is 172871753. The reversal of 172871746 is 647178271.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 285910 + ... + 286513.

It is an arithmetic number, because the mean of its divisors is an integer number (32628168).

Almost surely, 2^172871746 is an apocalyptic number.

172871746 is a deficient number, since it is larger than the sum of its proper divisors (88153598).

172871746 is a wasteful number, since it uses less digits than its factorization.

172871746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572576.

The product of its digits is 131712, while the sum is 43.

The square root of 172871746 is about 13148.0700484900. The cubic root of 172871746 is about 557.0677362729.

The spelling of 172871746 in words is "one hundred seventy-two million, eight hundred seventy-one thousand, seven hundred forty-six".