172898742 has 8 divisors (see below), whose sum is σ = 345797496. Its totient is φ = 57632912.

The previous prime is 172898741. The next prime is 172898767. The reversal of 172898742 is 247898271.

It is a sphenic number, since it is the product of 3 distinct primes.

172898742 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 172898691 and 172898700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172898741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14408223 + ... + 14408234.

It is an arithmetic number, because the mean of its divisors is an integer number (43224687).

Almost surely, 2^172898742 is an apocalyptic number.

172898742 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

172898742 is a wasteful number, since it uses less digits than its factorization.

172898742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28816462.

The product of its digits is 451584, while the sum is 48.

The square root of 172898742 is about 13149.0966229624. The cubic root of 172898742 is about 557.0967323701.

The spelling of 172898742 in words is "one hundred seventy-two million, eight hundred ninety-eight thousand, seven hundred forty-two".