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118874897 = 178978569
BaseRepresentation
bin1110001010111…
…10001100010001
322021200110200222
413011132030101
5220412444042
615443522425
72642264021
oct705361421
9267613628
10118874897
1161113519
1233989415
131b821a9b
1411b05a81
15a6822d2
hex715e311

118874897 has 8 divisors (see below), whose sum is σ = 127283400. Its totient is φ = 110623744.

The previous prime is 118874869. The next prime is 118874923. The reversal of 118874897 is 798478811.

It can be written as a sum of positive squares in 4 ways, for example, as 51782416 + 67092481 = 7196^2 + 8191^2 .

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 118874897 - 28 = 118874641 is a prime.

It is a super-2 number, since 2×1188748972 = 28262482273521218, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118874807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37772 + ... + 40797.

It is an arithmetic number, because the mean of its divisors is an integer number (15910425).

Almost surely, 2118874897 is an apocalyptic number.

118874897 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

118874897 is a deficient number, since it is larger than the sum of its proper divisors (8408503).

118874897 is an equidigital number, since it uses as much as digits as its factorization.

118874897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78675.

The product of its digits is 903168, while the sum is 53.

The square root of 118874897 is about 10902.9765201985. The cubic root of 118874897 is about 491.6960482426.

The spelling of 118874897 in words is "one hundred eighteen million, eight hundred seventy-four thousand, eight hundred ninety-seven".

Divisors: 1 17 89 1513 78569 1335673 6992641 118874897