172010020 has 96 divisors (see below), whose sum is σ = 460051200. Its totient is φ = 52545024.

The previous prime is 172009997. The next prime is 172010053. The reversal of 172010020 is 20010271.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51151 + ... + 54409.

It is an arithmetic number, because the mean of its divisors is an integer number (4792200).

Almost surely, 2^172010020 is an apocalyptic number.

172010020 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 172010020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (230025600).

172010020 is an abundant number, since it is smaller than the sum of its proper divisors (288041180).

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

172010020 is a wasteful number, since it uses less digits than its factorization.

172010020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3317 (or 3315 counting only the distinct ones).

The product of its (nonzero) digits is 28, while the sum is 13.

The square root of 172010020 is about 13115.2590519593. The cubic root of 172010020 is about 556.1405757067.

Adding to 172010020 its reverse (20010271), we get a palindrome (192020291).

The spelling of 172010020 in words is "one hundred seventy-two million, ten thousand, twenty".