109529172 has 60 divisors (see below), whose sum is σ = 296229780. Its totient is φ = 35247744.

The previous prime is 109529153. The next prime is 109529239. The reversal of 109529172 is 271925901.

It can be written as a sum of positive squares in 2 ways, for example, as 69155856 + 40373316 = 8316^2 + 6354^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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 19 ways as a sum of consecutive naturals, for example, 3568 + ... + 15224.

It is an arithmetic number, because the mean of its divisors is an integer number (4937163).

Almost surely, 2^109529172 is an apocalyptic number.

109529172 is a gapful number since it is divisible by the number (12) 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 109529172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148114890).

109529172 is an abundant number, since it is smaller than the sum of its proper divisors (186700608).

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

109529172 is a wasteful number, since it uses less digits than its factorization.

109529172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11702 (or 11691 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 36.

The square root of 109529172 is about 10465.6185674809. The cubic root of 109529172 is about 478.4573914753.

The spelling of 109529172 in words is "one hundred nine million, five hundred twenty-nine thousand, one hundred seventy-two".