172839480 has 128 divisors (see below), whose sum is σ = 590353920. Its totient is φ = 40071680.

The previous prime is 172839463. The next prime is 172839481. The reversal of 172839480 is 84938271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172839481) 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, 27514 + ... + 33206.

It is an arithmetic number, because the mean of its divisors is an integer number (4612140).

Almost surely, 2^172839480 is an apocalyptic number.

172839480 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 172839480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (295176960).

172839480 is an abundant number, since it is smaller than the sum of its proper divisors (417514440).

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

172839480 is a wasteful number, since it uses less digits than its factorization.

172839480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5741 (or 5737 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 172839480 is about 13146.8429670397. The cubic root of 172839480 is about 557.0330757680.

The spelling of 172839480 in words is "one hundred seventy-two million, eight hundred thirty-nine thousand, four hundred eighty".