172698144 has 96 divisors (see below), whose sum is σ = 484102080. Its totient is φ = 53747712.

The previous prime is 172698139. The next prime is 172698151. The reversal of 172698144 is 441896271.

It is a tau number, because it is divible by the number of its divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 172698096 and 172698105.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132504 + ... + 133800.

It is an arithmetic number, because the mean of its divisors is an integer number (5042730).

Almost surely, 2^172698144 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 172698144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (242051040).

172698144 is an abundant number, since it is smaller than the sum of its proper divisors (311403936).

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

172698144 is a wasteful number, since it uses less digits than its factorization.

172698144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1402 (or 1394 counting only the distinct ones).

The product of its digits is 96768, while the sum is 42.

The square root of 172698144 is about 13141.4665848223. The cubic root of 172698144 is about 556.8812001738.

The spelling of 172698144 in words is "one hundred seventy-two million, six hundred ninety-eight thousand, one hundred forty-four".