172685034 has 48 divisors (see below), whose sum is σ = 408451680. Its totient is φ = 54529200.

The previous prime is 172685027. The next prime is 172685047. The reversal of 172685034 is 430586271.

It is a self number, because there is not a number n which added to its sum of digits gives 172685034.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 117 + ... + 18584.

It is an arithmetic number, because the mean of its divisors is an integer number (8509410).

Almost surely, 2^172685034 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 172685034, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (204225840).

172685034 is an abundant number, since it is smaller than the sum of its proper divisors (235766646).

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

172685034 is a wasteful number, since it uses less digits than its factorization.

172685034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18737 (or 18725 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 172685034 is about 13140.9677725805. The cubic root of 172685034 is about 556.8671083465.

The spelling of 172685034 in words is "one hundred seventy-two million, six hundred eighty-five thousand, thirty-four".