172405248 has 80 divisors (see below), whose sum is σ = 464032800. Its totient is φ = 56877056.

The previous prime is 172405231. The next prime is 172405267. The reversal of 172405248 is 842504271.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163828 + ... + 164876.

It is an arithmetic number, because the mean of its divisors is an integer number (5800410).

Almost surely, 2^172405248 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 172405248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (232016400).

172405248 is an abundant number, since it is smaller than the sum of its proper divisors (291627552).

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

172405248 is a wasteful number, since it uses less digits than its factorization.

172405248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1177 (or 1161 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 33.

The square root of 172405248 is about 13130.3178940953. The cubic root of 172405248 is about 556.5661985767.

The spelling of 172405248 in words is "one hundred seventy-two million, four hundred five thousand, two hundred forty-eight".