172727940 has 240 divisors, whose sum is σ = 621149760. Its totient is φ = 35562240.

The previous prime is 172727927. The next prime is 172727963. The reversal of 172727940 is 49727271.

It is a congruent number.

It is an unprimeable number.

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 79 ways as a sum of consecutive naturals, for example, 1584606 + ... + 1584714.

It is an arithmetic number, because the mean of its divisors is an integer number (2588124).

Almost surely, 2^172727940 is an apocalyptic number.

172727940 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 172727940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (310574880).

172727940 is an abundant number, since it is smaller than the sum of its proper divisors (448421820).

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

172727940 is a wasteful number, since it uses less digits than its factorization.

172727940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160 (or 137 counting only the distinct ones).

The product of its (nonzero) digits is 49392, while the sum is 39.

The square root of 172727940 is about 13142.6001993517. The cubic root of 172727940 is about 556.9132249883.

The spelling of 172727940 in words is "one hundred seventy-two million, seven hundred twenty-seven thousand, nine hundred forty".