173328864 has 48 divisors (see below), whose sum is σ = 461239632. Its totient is φ = 56982528.

The previous prime is 173328863. The next prime is 173328913. The reversal of 173328864 is 468823371.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (173328863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5359 + ... + 19374.

It is an arithmetic number, because the mean of its divisors is an integer number (9609159).

Almost surely, 2^173328864 is an apocalyptic number.

It is an amenable number.

173328864 is an abundant number, since it is smaller than the sum of its proper divisors (287910768).

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

173328864 is a wasteful number, since it uses less digits than its factorization.

173328864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24819 (or 24811 counting only the distinct ones).

The product of its digits is 193536, while the sum is 42.

The square root of 173328864 is about 13165.4420358756. The cubic root of 173328864 is about 557.5583149333.

The spelling of 173328864 in words is "one hundred seventy-three million, three hundred twenty-eight thousand, eight hundred sixty-four".