172140586 has 8 divisors (see below), whose sum is σ = 258621984. Its totient is φ = 85933260.

The previous prime is 172140571. The next prime is 172140629. The reversal of 172140586 is 685041271.

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

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, 66940 + ... + 69463.

It is an arithmetic number, because the mean of its divisors is an integer number (32327748).

Almost surely, 2^172140586 is an apocalyptic number.

172140586 is a deficient number, since it is larger than the sum of its proper divisors (86481398).

172140586 is a wasteful number, since it uses less digits than its factorization.

172140586 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137036.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 172140586 is about 13120.2357448332. The cubic root of 172140586 is about 556.2812548865.

The spelling of 172140586 in words is "one hundred seventy-two million, one hundred forty thousand, five hundred eighty-six".