172740304 has 80 divisors (see below), whose sum is σ = 384975360. Its totient is φ = 74321280.

The previous prime is 172740299. The next prime is 172740371. The reversal of 172740304 is 403047271.

172740304 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 562519 + ... + 562825.

It is an arithmetic number, because the mean of its divisors is an integer number (4812192).

Almost surely, 2^172740304 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 172740304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (192487680).

172740304 is an abundant number, since it is smaller than the sum of its proper divisors (212235056).

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

172740304 is a wasteful number, since it uses less digits than its factorization.

172740304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488 (or 482 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 172740304 is about 13143.0705696957. The cubic root of 172740304 is about 556.9265127649.

Adding to 172740304 its reverse (403047271), we get a palindrome (575787575).

The spelling of 172740304 in words is "one hundred seventy-two million, seven hundred forty thousand, three hundred four".