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115220411 = 626318397
BaseRepresentation
bin1101101111000…
…01111110111011
322000210210200122
412313201332323
5213444023121
615233323455
72566233365
oct667417673
9260723618
10115220411
115a047889
123270658b
131ab42577
1411433d35
15a1ae5ab
hex6de1fbb

115220411 has 4 divisors (see below), whose sum is σ = 115245072. Its totient is φ = 115195752.

The previous prime is 115220401. The next prime is 115220419. The reversal of 115220411 is 114022511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 114022511 = 233489367.

It is a cyclic number.

It is not a de Polignac number, because 115220411 - 222 = 111026107 is a prime.

It is a super-2 number, since 2×1152204112 = 26551486222017842, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 115220411.

It is not an unprimeable number, because it can be changed into a prime (115220419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2936 + ... + 15461.

It is an arithmetic number, because the mean of its divisors is an integer number (28811268).

Almost surely, 2115220411 is an apocalyptic number.

115220411 is a deficient number, since it is larger than the sum of its proper divisors (24661).

115220411 is an equidigital number, since it uses as much as digits as its factorization.

115220411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24660.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 115220411 is about 10734.0770912082. The cubic root of 115220411 is about 486.6048949454.

Adding to 115220411 its reverse (114022511), we get a palindrome (229242922).

The spelling of 115220411 in words is "one hundred fifteen million, two hundred twenty thousand, four hundred eleven".

Divisors: 1 6263 18397 115220411