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115385213 = 162770919
BaseRepresentation
bin1101110000010…
…10001101111101
322001010011202102
412320022031331
5214014311323
615241034445
72600521016
oct670121575
9261104672
10115385213
115a14a689
1232785a25
131ab9c598
141147800d
15a1e3328
hex6e0a37d

115385213 has 4 divisors (see below), whose sum is σ = 115457760. Its totient is φ = 115312668.

The previous prime is 115385197. The next prime is 115385219. The reversal of 115385213 is 312583511.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 115385213 - 24 = 115385197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115385219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33833 + ... + 37086.

It is an arithmetic number, because the mean of its divisors is an integer number (28864440).

Almost surely, 2115385213 is an apocalyptic number.

It is an amenable number.

115385213 is a deficient number, since it is larger than the sum of its proper divisors (72547).

115385213 is an equidigital number, since it uses as much as digits as its factorization.

115385213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72546.

The product of its digits is 3600, while the sum is 29.

The square root of 115385213 is about 10741.7509280378. The cubic root of 115385213 is about 486.8367845775.

The spelling of 115385213 in words is "one hundred fifteen million, three hundred eighty-five thousand, two hundred thirteen".

Divisors: 1 1627 70919 115385213