Search a number
-
+
129225227 = 1995031291
BaseRepresentation
bin1111011001111…
…01001000001011
3100000011022200112
413230331020023
5231040201402
620453424535
73126252635
oct754751013
9300138615
10129225227
1166a4290a
123733b14b
1320a06c41
141323ba55
15b528e52
hex7b3d20b

129225227 has 8 divisors (see below), whose sum is σ = 130233600. Its totient is φ = 128220840.

The previous prime is 129225223. The next prime is 129225233. The reversal of 129225227 is 722522921.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 129225227 - 22 = 129225223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 129225193 and 129225202.

It is not an unprimeable number, because it can be changed into a prime (129225221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99452 + ... + 100742.

It is an arithmetic number, because the mean of its divisors is an integer number (16279200).

Almost surely, 2129225227 is an apocalyptic number.

129225227 is a deficient number, since it is larger than the sum of its proper divisors (1008373).

129225227 is a wasteful number, since it uses less digits than its factorization.

129225227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1993.

The product of its digits is 10080, while the sum is 32.

The square root of 129225227 is about 11367.7274333967. The cubic root of 129225227 is about 505.5713260753.

The spelling of 129225227 in words is "one hundred twenty-nine million, two hundred twenty-five thousand, two hundred twenty-seven".

Divisors: 1 199 503 1291 100097 256909 649373 129225227