172487860 has 12 divisors (see below), whose sum is σ = 362224548. Its totient is φ = 68995136.

The previous prime is 172487849. The next prime is 172487873. The reversal of 172487860 is 68784271.

It can be written as a sum of positive squares in 2 ways, for example, as 130782096 + 41705764 = 11436^2 + 6458^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4312177 + ... + 4312216.

It is an arithmetic number, because the mean of its divisors is an integer number (30185379).

Almost surely, 2^172487860 is an apocalyptic number.

172487860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172487860 is an abundant number, since it is smaller than the sum of its proper divisors (189736688).

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

172487860 is a wasteful number, since it uses less digits than its factorization.

172487860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8624402 (or 8624400 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 43.

The square root of 172487860 is about 13133.4633665306. The cubic root of 172487860 is about 556.6550816112.

The spelling of 172487860 in words is "one hundred seventy-two million, four hundred eighty-seven thousand, eight hundred sixty".