172438283 has 4 divisors (see below), whose sum is σ = 172621320. Its totient is φ = 172255248.

The previous prime is 172438267. The next prime is 172438307. The reversal of 172438283 is 382834271.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 382834271 = 17 ⋅22519663.

It is a cyclic number.

It is not a de Polignac number, because 172438283 - 2⁴ = 172438267 is a prime.

It is a super-2 number, since 2×172438283² = 59469922887976178, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172438223) 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 3 ways as a sum of consecutive naturals, for example, 90098 + ... + 91991.

It is an arithmetic number, because the mean of its divisors is an integer number (43155330).

Almost surely, 2^172438283 is an apocalyptic number.

172438283 is a deficient number, since it is larger than the sum of its proper divisors (183037).

172438283 is an equidigital number, since it uses as much as digits as its factorization.

172438283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183036.

The product of its digits is 64512, while the sum is 38.

The square root of 172438283 is about 13131.5758003371. The cubic root of 172438283 is about 556.6017446528.

The spelling of 172438283 in words is "one hundred seventy-two million, four hundred thirty-eight thousand, two hundred eighty-three".