172408144 has 10 divisors (see below), whose sum is σ = 334040810. Its totient is φ = 86204064.

The previous prime is 172408141. The next prime is 172408151. The reversal of 172408144 is 441804271.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 109998144 + 62410000 = 10488^2 + 7900^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172408141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5387739 + ... + 5387770.

It is an arithmetic number, because the mean of its divisors is an integer number (33404081).

Almost surely, 2^172408144 is an apocalyptic number.

It is an amenable number.

172408144 is a deficient number, since it is larger than the sum of its proper divisors (161632666).

172408144 is a wasteful number, since it uses less digits than its factorization.

172408144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10775517 (or 10775511 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 31.

The square root of 172408144 is about 13130.4281727596. The cubic root of 172408144 is about 556.5693148908.

The spelling of 172408144 in words is "one hundred seventy-two million, four hundred eight thousand, one hundred forty-four".