8173432320 has 160 divisors (see below), whose sum is σ = 26213286528. Its totient is φ = 2172592128.

The previous prime is 8173432313. The next prime is 8173432361. The reversal of 8173432320 is 232343718.

It is a tau number, because it is divible by the number of its divisors (160).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2663427 + ... + 2666493.

Almost surely, 2^8173432320 is an apocalyptic number.

8173432320 is a gapful number since it is divisible by the number (80) 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 8173432320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13106643264).

8173432320 is an abundant number, since it is smaller than the sum of its proper divisors (18039854208).

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

8173432320 is a wasteful number, since it uses less digits than its factorization.

8173432320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3440 (or 3424 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 8173432320 is about 90407.0368942595. The cubic root of 8173432320 is about 2014.3494931338.

The spelling of 8173432320 in words is "eight billion, one hundred seventy-three million, four hundred thirty-two thousand, three hundred twenty".