172400716 has 12 divisors (see below), whose sum is σ = 304005240. Its totient is φ = 85542080.

The previous prime is 172400707. The next prime is 172400731. The reversal of 172400716 is 617004271.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163981 + ... + 165028.

It is an arithmetic number, because the mean of its divisors is an integer number (25333770).

Almost surely, 2^172400716 is an apocalyptic number.

It is an amenable number.

172400716 is a deficient number, since it is larger than the sum of its proper divisors (131604524).

172400716 is a wasteful number, since it uses less digits than its factorization.

172400716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329144 (or 329142 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 172400716 is about 13130.1453152659. The cubic root of 172400716 is about 556.5613217335.

Adding to 172400716 its reverse (617004271), we get a palindrome (789404987).

The spelling of 172400716 in words is "one hundred seventy-two million, four hundred thousand, seven hundred sixteen".