172736340 has 96 divisors (see below), whose sum is σ = 570630144. Its totient is φ = 38206080.

The previous prime is 172736329. The next prime is 172736357. The reversal of 172736340 is 43637271.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6387 + ... + 19653.

It is an arithmetic number, because the mean of its divisors is an integer number (5944064).

Almost surely, 2^172736340 is an apocalyptic number.

172736340 is a gapful number since it is divisible by the number (10) 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 172736340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (285315072).

172736340 is an abundant number, since it is smaller than the sum of its proper divisors (397893804).

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

172736340 is a wasteful number, since it uses less digits than its factorization.

172736340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13317 (or 13315 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 33.

The square root of 172736340 is about 13142.9197669315. The cubic root of 172736340 is about 556.9222526636.

The spelling of 172736340 in words is "one hundred seventy-two million, seven hundred thirty-six thousand, three hundred forty".