129226760 has 64 divisors (see below), whose sum is σ = 315085680. Its totient is φ = 47416320.

The previous prime is 129226759. The next prime is 129226777. The reversal of 129226760 is 67622921.

It can be written as a sum of positive squares in 8 ways, for example, as 31651876 + 97574884 = 5626^2 + 9878^2 .

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 129226760.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93434 + ... + 94806.

Almost surely, 2^129226760 is an apocalyptic number.

129226760 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 129226760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157542840).

129226760 is an abundant number, since it is smaller than the sum of its proper divisors (185858920).

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

129226760 is a wasteful number, since it uses less digits than its factorization.

129226760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1578 (or 1574 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 129226760 is about 11367.7948609218. The cubic root of 129226760 is about 505.5733252664.

The spelling of 129226760 in words is "one hundred twenty-nine million, two hundred twenty-six thousand, seven hundred sixty".