172115324 has 6 divisors (see below), whose sum is σ = 301201824. Its totient is φ = 86057660.

The previous prime is 172115323. The next prime is 172115329. The reversal of 172115324 is 423511271.

It is a junction number, because it is equal to n+sod(n) for n = 172115293 and 172115302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172115323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21514412 + ... + 21514419.

It is an arithmetic number, because the mean of its divisors is an integer number (50200304).

Almost surely, 2^172115324 is an apocalyptic number.

It is an amenable number.

172115324 is a deficient number, since it is larger than the sum of its proper divisors (129086500).

172115324 is a wasteful number, since it uses less digits than its factorization.

172115324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43028835 (or 43028833 counting only the distinct ones).

The product of its digits is 1680, while the sum is 26.

The square root of 172115324 is about 13119.2729981505. The cubic root of 172115324 is about 556.2540417330.

Adding to 172115324 its reverse (423511271), we get a palindrome (595626595).

The spelling of 172115324 in words is "one hundred seventy-two million, one hundred fifteen thousand, three hundred twenty-four".