172247404 has 24 divisors (see below), whose sum is σ = 346429440. Its totient is φ = 73405776.

The previous prime is 172247401. The next prime is 172247441. The reversal of 172247404 is 404742271.

It is not an unprimeable number, because it can be changed into a prime (172247401) 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 7 ways as a sum of consecutive naturals, for example, 12172 + ... + 22195.

It is an arithmetic number, because the mean of its divisors is an integer number (14434560).

Almost surely, 2^172247404 is an apocalyptic number.

172247404 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

172247404 is an abundant number, since it is smaller than the sum of its proper divisors (174182036).

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

172247404 is a wasteful number, since it uses less digits than its factorization.

172247404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34557 (or 34555 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 31.

The square root of 172247404 is about 13124.3058483106. The cubic root of 172247404 is about 556.3962937353.

Adding to 172247404 its reverse (404742271), we get a palindrome (576989675).

The spelling of 172247404 in words is "one hundred seventy-two million, two hundred forty-seven thousand, four hundred four".