172370880 has 168 divisors, whose sum is σ = 646901424. Its totient is φ = 41779200.

The previous prime is 172370873. The next prime is 172370897. The reversal of 172370880 is 88073271.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28960 + ... + 34400.

Almost surely, 2^172370880 is an apocalyptic number.

172370880 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 172370880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (323450712).

172370880 is an abundant number, since it is smaller than the sum of its proper divisors (474530544).

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

172370880 is a wasteful number, since it uses less digits than its factorization.

172370880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5475 (or 5462 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 36.

The square root of 172370880 is about 13129.0091019848. The cubic root of 172370880 is about 556.5292133564.

The spelling of 172370880 in words is "one hundred seventy-two million, three hundred seventy thousand, eight hundred eighty".