171428616 has 64 divisors (see below), whose sum is σ = 487291200. Its totient is φ = 55810944.

The previous prime is 171428611. The next prime is 171428617. The reversal of 171428616 is 616824171.

It is a happy number.

171428616 is a `hidden beast` number, since 1 + 7 + 14 + 28 + 616 = 666.

171428616 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (171428611) 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 15 ways as a sum of consecutive naturals, for example, 60 + ... + 18516.

It is an arithmetic number, because the mean of its divisors is an integer number (7613925).

Almost surely, 2^171428616 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 171428616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (243645600).

171428616 is an abundant number, since it is smaller than the sum of its proper divisors (315862584).

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

171428616 is a wasteful number, since it uses less digits than its factorization.

171428616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18515 (or 18505 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 171428616 is about 13093.0751162590. The cubic root of 171428616 is about 555.5132724323.

The spelling of 171428616 in words is "one hundred seventy-one million, four hundred twenty-eight thousand, six hundred sixteen".