172000000 has 126 divisors (see below), whose sum is σ = 439135004. Its totient is φ = 67200000.

The previous prime is 171999991. The next prime is 172000001. The reversal of 172000000 is 271.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (172000001) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 3999979 + ... + 4000021.

Almost surely, 2^172000000 is an apocalyptic number.

172000000 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 172000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (219567502).

172000000 is an abundant number, since it is smaller than the sum of its proper divisors (267135004).

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

172000000 is an frugal number, since it uses more digits than its factorization.

172000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89 (or 50 counting only the distinct ones).

The product of its (nonzero) digits is 14, while the sum is 10.

The square root of 172000000 is about 13114.8770486040. The cubic root of 172000000 is about 556.1297766521.

Adding to 172000000 its reverse (271), we get a palindrome (172000271).

The spelling of 172000000 in words is "one hundred seventy-two million", and thus it is an aban number.