172727620 has 48 divisors (see below), whose sum is σ = 393781248. Its totient is φ = 63262080.

The previous prime is 172727587. The next prime is 172727627. The reversal of 172727620 is 26727271.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (172727627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30405 + ... + 35635.

It is an arithmetic number, because the mean of its divisors is an integer number (8203776).

Almost surely, 2^172727620 is an apocalyptic number.

172727620 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 172727620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (196890624).

172727620 is an abundant number, since it is smaller than the sum of its proper divisors (221053628).

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

172727620 is a wasteful number, since it uses less digits than its factorization.

172727620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5380 (or 5378 counting only the distinct ones).

The product of its (nonzero) digits is 16464, while the sum is 34.

The square root of 172727620 is about 13142.5880251950. The cubic root of 172727620 is about 556.9128810711.

The spelling of 172727620 in words is "one hundred seventy-two million, seven hundred twenty-seven thousand, six hundred twenty".