172204488 has 64 divisors (see below), whose sum is σ = 483336000. Its totient is φ = 56802816.

The previous prime is 172204481. The next prime is 172204489. The reversal of 172204488 is 884402271.

172204488 is a `hidden beast` number, since 172 + 2 + 0 + 4 + 488 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (172204481) 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 15 ways as a sum of consecutive naturals, for example, 16843 + ... + 25061.

It is an arithmetic number, because the mean of its divisors is an integer number (7552125).

Almost surely, 2^172204488 is an apocalyptic number.

172204488 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 172204488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (241668000).

172204488 is an abundant number, since it is smaller than the sum of its proper divisors (311131512).

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

172204488 is a wasteful number, since it uses less digits than its factorization.

172204488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8331 (or 8321 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 36.

The square root of 172204488 is about 13122.6707647491. The cubic root of 172204488 is about 556.3500805827.

The spelling of 172204488 in words is "one hundred seventy-two million, two hundred four thousand, four hundred eighty-eight".