130172224 has 168 divisors, whose sum is σ = 337279488. Its totient is φ = 49351680.

The previous prime is 130172221. The next prime is 130172239. The reversal of 130172224 is 422271031.

It is a super-2 number, since 2×130172224² = 33889615802212352, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 130172195 and 130172204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130172221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1263757 + ... + 1263859.

It is an arithmetic number, because the mean of its divisors is an integer number (2007616).

Almost surely, 2^130172224 is an apocalyptic number.

130172224 is a gapful number since it is divisible by the number (14) 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 130172224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168639744).

130172224 is an abundant number, since it is smaller than the sum of its proper divisors (207107264).

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

130172224 is a wasteful number, since it uses less digits than its factorization.

130172224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173 (or 156 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 130172224 is about 11409.3042732675. The cubic root of 130172224 is about 506.8033087907.

The spelling of 130172224 in words is "one hundred thirty million, one hundred seventy-two thousand, two hundred twenty-four".