173167987428 has 120 divisors (see below), whose sum is σ = 455091372120. Its totient is φ = 57417984000.

The previous prime is 173167987411. The next prime is 173167987501. The reversal of 173167987428 is 824789761371.

173167987428 is a `hidden beast` number, since 1 + 73 + 1 + 67 + 9 + 87 + 428 = 666.

173167987428 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2679925824 + 170488061604 = 51768^2 + 412902^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 57701928 + ... + 57704928.

It is an arithmetic number, because the mean of its divisors is an integer number (3792428101).

Almost surely, 2^173167987428 is an apocalyptic number.

173167987428 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 173167987428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (227545686060).

173167987428 is an abundant number, since it is smaller than the sum of its proper divisors (281923384692).

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

173167987428 is a wasteful number, since it uses less digits than its factorization.

173167987428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3899 (or 3888 counting only the distinct ones).

The product of its digits is 28449792, while the sum is 63.

The spelling of 173167987428 in words is "one hundred seventy-three billion, one hundred sixty-seven million, nine hundred eighty-seven thousand, four hundred twenty-eight".