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115830212 = 22137211369
BaseRepresentation
bin1101110011101…
…10110111000100
322001221210011212
412321312313010
5214123031322
615254350552
72604353261
oct671666704
9261853155
10115830212
115a423a53
123295b458
131acc6cb4
1411552268
15a2800e2
hex6e76dc4

115830212 has 12 divisors (see below), whose sum is σ = 204183420. Its totient is φ = 57492096.

The previous prime is 115830199. The next prime is 115830217. The reversal of 115830212 is 212038511.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 59969536 + 55860676 = 7744^2 + 7474^2 .

It is not an unprimeable number, because it can be changed into a prime (115830217) 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, 105137 + ... + 106232.

It is an arithmetic number, because the mean of its divisors is an integer number (17015285).

Almost surely, 2115830212 is an apocalyptic number.

It is an amenable number.

115830212 is a deficient number, since it is larger than the sum of its proper divisors (88353208).

115830212 is a wasteful number, since it uses less digits than its factorization.

115830212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211510 (or 211508 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 115830212 is about 10762.4445178593. Note that the first 3 decimals coincide. The cubic root of 115830212 is about 487.4618328217.

Adding to 115830212 its reverse (212038511), we get a palindrome (327868723).

The spelling of 115830212 in words is "one hundred fifteen million, eight hundred thirty thousand, two hundred twelve".

Divisors: 1 2 4 137 274 548 211369 422738 845476 28957553 57915106 115830212