34172120 has 16 divisors (see below), whose sum is σ = 76887360. Its totient is φ = 13668832.

The previous prime is 34172119. The next prime is 34172141. The reversal of 34172120 is 2127143.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 34172092 and 34172101.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 427112 + ... + 427191.

It is an arithmetic number, because the mean of its divisors is an integer number (4805460).

Almost surely, 2^34172120 is an apocalyptic number.

It is an amenable number.

34172120 is an abundant number, since it is smaller than the sum of its proper divisors (42715240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

34172120 is a wasteful number, since it uses less digits than its factorization.

34172120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 854314 (or 854310 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 34172120 is about 5845.6924311838. The cubic root of 34172120 is about 324.5069288479.

Adding to 34172120 its reverse (2127143), we get a palindrome (36299263).

The spelling of 34172120 in words is "thirty-four million, one hundred seventy-two thousand, one hundred twenty".