172287000000 has 588 divisors, whose sum is σ = 641044138280. Its totient is φ = 45878400000.

The previous prime is 172286999999. The next prime is 172287000001. The reversal of 172287000000 is 782271.

It is an interprime number because it is at equal distance from previous prime (172286999999) and next prime (172287000001).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172287000001) by changing a digit.

It is a polite number, since it can be written in 83 ways as a sum of consecutive naturals, for example, 242999646 + ... + 243000354.

Almost surely, 2^172287000000 is an apocalyptic number.

172287000000 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 172287000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (320522069140).

172287000000 is an abundant number, since it is smaller than the sum of its proper divisors (468757138280).

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

172287000000 is an frugal number, since it uses more digits than its factorization.

172287000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766 (or 719 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 27.

Adding to 172287000000 its reverse (782271), we get a palindrome (172287782271).

The spelling of 172287000000 in words is "one hundred seventy-two billion, two hundred eighty-seven million", and thus it is an aban number.