172117434 has 8 divisors (see below), whose sum is σ = 344234880. Its totient is φ = 57372476.

The previous prime is 172117423. The next prime is 172117453. The reversal of 172117434 is 434711271.

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

172117434 is an admirable number.

It is a super-2 number, since 2×172117434² = 59248822173488712, which contains 22 as substring.

It is an unprimeable number.

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, 14343114 + ... + 14343125.

It is an arithmetic number, because the mean of its divisors is an integer number (43029360).

Almost surely, 2^172117434 is an apocalyptic number.

172117434 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.

172117434 is a wasteful number, since it uses less digits than its factorization.

172117434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28686244.

The product of its digits is 4704, while the sum is 30.

The square root of 172117434 is about 13119.3534139454. The cubic root of 172117434 is about 556.2563148044.

The spelling of 172117434 in words is "one hundred seventy-two million, one hundred seventeen thousand, four hundred thirty-four".