172941660 has 72 divisors (see below), whose sum is σ = 526330896. Its totient is φ = 45964800.

The previous prime is 172941647. The next prime is 172941679. The reversal of 172941660 is 66149271.

172941660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59235 + ... + 62085.

Almost surely, 2^172941660 is an apocalyptic number.

172941660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 172941660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (263165448).

172941660 is an abundant number, since it is smaller than the sum of its proper divisors (353389236).

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

172941660 is a wasteful number, since it uses less digits than its factorization.

172941660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3203 (or 3198 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 172941660 is about 13150.7284969313. The cubic root of 172941660 is about 557.1428238941.

The spelling of 172941660 in words is "one hundred seventy-two million, nine hundred forty-one thousand, six hundred sixty".