172083387 has 24 divisors (see below), whose sum is σ = 270985728. Its totient is φ = 95150160.

The previous prime is 172083343. The next prime is 172083391. The reversal of 172083387 is 783380271.

It is not a de Polignac number, because 172083387 - 2¹⁰ = 172082363 is a prime.

It is a super-2 number, since 2×172083387² = 59225384162783538, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172083287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15918 + ... + 24444.

It is an arithmetic number, because the mean of its divisors is an integer number (11291072).

Almost surely, 2^172083387 is an apocalyptic number.

172083387 is a deficient number, since it is larger than the sum of its proper divisors (98902341).

172083387 is an equidigital number, since it uses as much as digits as its factorization.

172083387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8599 (or 8568 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 39.

The square root of 172083387 is about 13118.0557629551. The cubic root of 172083387 is about 556.2196342132.

The spelling of 172083387 in words is "one hundred seventy-two million, eighty-three thousand, three hundred eighty-seven".