172898073 has 12 divisors (see below), whose sum is σ = 250398720. Its totient is φ = 114962136.

The previous prime is 172898071. The next prime is 172898093. The reversal of 172898073 is 370898271.

172898073 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 172898073 - 2¹ = 172898071 is a prime.

It is a super-2 number, since 2×172898073² = 59787487294226658, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (172898071) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21633 + ... + 28526.

It is an arithmetic number, because the mean of its divisors is an integer number (20866560).

Almost surely, 2^172898073 is an apocalyptic number.

It is an amenable number.

172898073 is a deficient number, since it is larger than the sum of its proper divisors (77500647).

172898073 is a wasteful number, since it uses less digits than its factorization.

172898073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50548 (or 50545 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 45.

The square root of 172898073 is about 13149.0711839278. The cubic root of 172898073 is about 557.0960138413.

The spelling of 172898073 in words is "one hundred seventy-two million, eight hundred ninety-eight thousand, seventy-three".