172289468 has 12 divisors (see below), whose sum is σ = 324699480. Its totient is φ = 79518192.

The previous prime is 172289461. The next prime is 172289471. The reversal of 172289468 is 864982271.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172289461) 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, 1656578 + ... + 1656681.

It is an arithmetic number, because the mean of its divisors is an integer number (27058290).

Almost surely, 2^172289468 is an apocalyptic number.

It is an amenable number.

172289468 is a deficient number, since it is larger than the sum of its proper divisors (152410012).

172289468 is a wasteful number, since it uses less digits than its factorization.

172289468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3313276 (or 3313274 counting only the distinct ones).

The product of its digits is 387072, while the sum is 47.

The square root of 172289468 is about 13125.9082733348. The cubic root of 172289468 is about 556.4415819821.

The spelling of 172289468 in words is "one hundred seventy-two million, two hundred eighty-nine thousand, four hundred sixty-eight".