Search a number
-
+
115227905 = 5131772737
BaseRepresentation
bin1101101111000…
…11110100000001
322000211011222012
412313203310001
5213444243110
615233422305
72566264262
oct667436401
9260734865
10115227905
115a052481
123270a995
131ab45ac0
1411436969
15a1b1905
hex6de3d01

115227905 has 8 divisors (see below), whose sum is σ = 148909992. Its totient is φ = 85091328.

The previous prime is 115227901. The next prime is 115227911. The reversal of 115227905 is 509722511.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 223729 + 115004176 = 473^2 + 10724^2 .

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 115227905 - 22 = 115227901 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115227901) 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, 886304 + ... + 886433.

It is an arithmetic number, because the mean of its divisors is an integer number (18613749).

Almost surely, 2115227905 is an apocalyptic number.

It is an amenable number.

115227905 is a deficient number, since it is larger than the sum of its proper divisors (33682087).

115227905 is a wasteful number, since it uses less digits than its factorization.

115227905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1772755.

The product of its (nonzero) digits is 6300, while the sum is 32.

The square root of 115227905 is about 10734.4261607223. The cubic root of 115227905 is about 486.6154444015.

The spelling of 115227905 in words is "one hundred fifteen million, two hundred twenty-seven thousand, nine hundred five".

Divisors: 1 5 13 65 1772737 8863685 23045581 115227905