173288420928 has 224 divisors, whose sum is σ = 585927200000. Its totient is φ = 49195081728.

The previous prime is 173288420927. The next prime is 173288420951. The reversal of 173288420928 is 829024882371.

173288420928 is a `hidden beast` number, since 17 + 328 + 84 + 209 + 28 = 666.

It is a tau number, because it is divible by the number of its divisors (224).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (173288420927) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1853448 + ... + 1944696.

Almost surely, 2^173288420928 is an apocalyptic number.

173288420928 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 173288420928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (292963600000).

173288420928 is an abundant number, since it is smaller than the sum of its proper divisors (412638779072).

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

173288420928 is a wasteful number, since it uses less digits than its factorization.

173288420928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91434 (or 91418 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 54.

The spelling of 173288420928 in words is "one hundred seventy-three billion, two hundred eighty-eight million, four hundred twenty thousand, nine hundred twenty-eight".