172861200 has 90 divisors (see below), whose sum is σ = 599888874. Its totient is φ = 46095360.

The previous prime is 172861193. The next prime is 172861201. The reversal of 172861200 is 2168271.

It can be written as a sum of positive squares in 3 ways, for example, as 831744 + 172029456 = 912^2 + 13116^2 .

It is a tau number, because it is divible by the number of its divisors (90).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172861201) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 20409 + ... + 27608.

Almost surely, 2^172861200 is an apocalyptic number.

172861200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172861200 is an abundant number, since it is smaller than the sum of its proper divisors (427027674).

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

172861200 is a wasteful number, since it uses less digits than its factorization.

172861200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48041 (or 48027 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 172861200 is about 13147.6689949207. The cubic root of 172861200 is about 557.0564081140.

The spelling of 172861200 in words is "one hundred seventy-two million, eight hundred sixty-one thousand, two hundred".