129827226 has 32 divisors (see below), whose sum is σ = 271687680. Its totient is φ = 41280624.

The previous prime is 129827213. The next prime is 129827227. The reversal of 129827226 is 622728921.

It is a super-2 number, since 2×129827226² = 33710217221710152, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (129827227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59511 + ... + 61653.

It is an arithmetic number, because the mean of its divisors is an integer number (8490240).

Almost surely, 2^129827226 is an apocalyptic number.

129827226 is an abundant number, since it is smaller than the sum of its proper divisors (141860454).

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

129827226 is a wasteful number, since it uses less digits than its factorization.

129827226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2610.

The product of its digits is 48384, while the sum is 39.

The square root of 129827226 is about 11394.1750908085. The cubic root of 129827226 is about 506.3551824126.

The spelling of 129827226 in words is "one hundred twenty-nine million, eight hundred twenty-seven thousand, two hundred twenty-six".