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115831274 = 2138275387
BaseRepresentation
bin1101110011101…
…11000111101010
322001221211122012
412321313013222
5214123100044
615254355522
72604356336
oct671670752
9261854565
10115831274
115a424829
123295bba2
131acc7620
14115527c6
15a28059e
hex6e771ea

115831274 has 16 divisors (see below), whose sum is σ = 187373088. Its totient is φ = 53386032.

The previous prime is 115831271. The next prime is 115831279. The reversal of 115831274 is 472138511.

It is a self number, because there is not a number n which added to its sum of digits gives 115831274.

It is not an unprimeable number, because it can be changed into a prime (115831271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18809 + ... + 24195.

It is an arithmetic number, because the mean of its divisors is an integer number (11710818).

Almost surely, 2115831274 is an apocalyptic number.

115831274 is a deficient number, since it is larger than the sum of its proper divisors (71541814).

115831274 is a wasteful number, since it uses less digits than its factorization.

115831274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6229.

The product of its digits is 6720, while the sum is 32.

The square root of 115831274 is about 10762.4938559797. The cubic root of 115831274 is about 487.4633225967.

Adding to 115831274 its reverse (472138511), we get a palindrome (587969785).

The spelling of 115831274 in words is "one hundred fifteen million, eight hundred thirty-one thousand, two hundred seventy-four".

Divisors: 1 2 13 26 827 1654 5387 10751 10774 21502 70031 140062 4455049 8910098 57915637 115831274