172487880 has 160 divisors (see below), whose sum is σ = 585446400. Its totient is φ = 45546624.

The previous prime is 172487873. The next prime is 172487891. The reversal of 172487880 is 88784271.

172487880 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 450169 + ... + 450551.

It is an arithmetic number, because the mean of its divisors is an integer number (3659040).

Almost surely, 2^172487880 is an apocalyptic number.

172487880 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 172487880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (292723200).

172487880 is an abundant number, since it is smaller than the sum of its proper divisors (412958520).

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

172487880 is a wasteful number, since it uses less digits than its factorization.

172487880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545 (or 532 counting only the distinct ones).

The product of its (nonzero) digits is 200704, while the sum is 45.

The square root of 172487880 is about 13133.4641279443. The cubic root of 172487880 is about 556.6551031259.

The spelling of 172487880 in words is "one hundred seventy-two million, four hundred eighty-seven thousand, eight hundred eighty".