172641270 has 16 divisors (see below), whose sum is σ = 414339120. Its totient is φ = 46037664.

The previous prime is 172641253. The next prime is 172641281. The reversal of 172641270 is 72146271.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 5754709 = 172641270 / (1 + 7 + 2 + 6 + 4 + 1 + 2 + 7 + 0).

It is a Curzon number.

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, 2877325 + ... + 2877384.

It is an arithmetic number, because the mean of its divisors is an integer number (25896195).

Almost surely, 2^172641270 is an apocalyptic number.

172641270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

172641270 is an abundant number, since it is smaller than the sum of its proper divisors (241697850).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

172641270 is a wasteful number, since it uses less digits than its factorization.

172641270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5754719.

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 172641270 is about 13139.3024929027. The cubic root of 172641270 is about 556.8200616306.

The spelling of 172641270 in words is "one hundred seventy-two million, six hundred forty-one thousand, two hundred seventy".