172072098 has 48 divisors (see below), whose sum is σ = 407811456. Its totient is φ = 52002720.

The previous prime is 172072093. The next prime is 172072133. The reversal of 172072098 is 890270271.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (172072093) by changing a digit.

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, 90736 + ... + 92612.

It is an arithmetic number, because the mean of its divisors is an integer number (8496072).

Almost surely, 2^172072098 is an apocalyptic number.

172072098 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 172072098, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (203905728).

172072098 is an abundant number, since it is smaller than the sum of its proper divisors (235739358).

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

172072098 is a wasteful number, since it uses less digits than its factorization.

172072098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2359 (or 2356 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 172072098 is about 13117.6254710980. The cubic root of 172072098 is about 556.2074709226.

The spelling of 172072098 in words is "one hundred seventy-two million, seventy-two thousand, ninety-eight".