172800447 has 8 divisors (see below), whose sum is σ = 230541360. Its totient is φ = 115129920.

The previous prime is 172800431. The next prime is 172800469. The reversal of 172800447 is 744008271.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 172800447 - 2⁴ = 172800431 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172800487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11572 + ... + 21897.

It is an arithmetic number, because the mean of its divisors is an integer number (28817670).

Almost surely, 2^172800447 is an apocalyptic number.

172800447 is a deficient number, since it is larger than the sum of its proper divisors (57740913).

172800447 is a wasteful number, since it uses less digits than its factorization.

172800447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35193.

The product of its (nonzero) digits is 12544, while the sum is 33.

The square root of 172800447 is about 13145.3583823340. The cubic root of 172800447 is about 556.9911403086.

The spelling of 172800447 in words is "one hundred seventy-two million, eight hundred thousand, four hundred forty-seven".