172006424 has 32 divisors (see below), whose sum is σ = 334476000. Its totient is φ = 82828032.

The previous prime is 172006423. The next prime is 172006427. The reversal of 172006424 is 424600271.

It is a junction number, because it is equal to n+sod(n) for n = 172006393 and 172006402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172006421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131357 + ... + 132659.

It is an arithmetic number, because the mean of its divisors is an integer number (10452375).

Almost surely, 2^172006424 is an apocalyptic number.

It is an amenable number.

172006424 is a deficient number, since it is larger than the sum of its proper divisors (162469576).

172006424 is a wasteful number, since it uses less digits than its factorization.

172006424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1907 (or 1903 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 172006424 is about 13115.1219590212. The cubic root of 172006424 is about 556.1367001661.

Adding to 172006424 its reverse (424600271), we get a palindrome (596606695).

The spelling of 172006424 in words is "one hundred seventy-two million, six thousand, four hundred twenty-four".