172484387 has 4 divisors (see below), whose sum is σ = 172510680. Its totient is φ = 172458096.

The previous prime is 172484381. The next prime is 172484437. The reversal of 172484387 is 783484271.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 783484271 = 29 ⋅27016699.

It is a cyclic number.

It is not a de Polignac number, because 172484387 - 2¹⁸ = 172222243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172484381) 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, 5708 + ... + 19430.

It is an arithmetic number, because the mean of its divisors is an integer number (43127670).

Almost surely, 2^172484387 is an apocalyptic number.

172484387 is a deficient number, since it is larger than the sum of its proper divisors (26293).

172484387 is a wasteful number, since it uses less digits than its factorization.

172484387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26292.

The product of its digits is 301056, while the sum is 44.

The square root of 172484387 is about 13133.3311463619. The cubic root of 172484387 is about 556.6513455491.

The spelling of 172484387 in words is "one hundred seventy-two million, four hundred eighty-four thousand, three hundred eighty-seven".