173408256 has 216 divisors, whose sum is σ = 597686040. Its totient is φ = 49545216.

The previous prime is 173408243. The next prime is 173408267. The reversal of 173408256 is 652804371.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is a tau number, because it is divible by the number of its divisors (216).

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

It is a self number, because there is not a number n which added to its sum of digits gives 173408256.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24772605 + ... + 24772611.

It is an arithmetic number, because the mean of its divisors is an integer number (2767065).

Almost surely, 2^173408256 is an apocalyptic number.

173408256 is a gapful number since it is divisible by the number (16) 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 173408256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (298843020).

173408256 is an abundant number, since it is smaller than the sum of its proper divisors (424277784).

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

173408256 is an frugal number, since it uses more digits than its factorization.

173408256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57 (or 12 counting only the distinct ones).

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

The square root of 173408256 is about 13168.4568572024. The cubic root of 173408256 is about 557.6434304221.

The spelling of 173408256 in words is "one hundred seventy-three million, four hundred eight thousand, two hundred fifty-six".