172046020 has 12 divisors (see below), whose sum is σ = 361296684. Its totient is φ = 68818400.

The previous prime is 172045997. The next prime is 172046023. The reversal of 172046020 is 20640271.

It can be written as a sum of positive squares in 2 ways, for example, as 68657796 + 103388224 = 8286^2 + 10168^2 .

It is a junction number, because it is equal to n+sod(n) for n = 172045982 and 172046000.

It is not an unprimeable number, because it can be changed into a prime (172046023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4301131 + ... + 4301170.

It is an arithmetic number, because the mean of its divisors is an integer number (30108057).

Almost surely, 2^172046020 is an apocalyptic number.

172046020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172046020 is an abundant number, since it is smaller than the sum of its proper divisors (189250664).

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

172046020 is a wasteful number, since it uses less digits than its factorization.

172046020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8602310 (or 8602308 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 172046020 is about 13116.6314273140. The cubic root of 172046020 is about 556.1793712454.

Adding to 172046020 its reverse (20640271), we get a palindrome (192686291).

The spelling of 172046020 in words is "one hundred seventy-two million, forty-six thousand, twenty".