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318802049 = 536179749
BaseRepresentation
bin10011000000001…
…000100010000001
3211012212211012022
4103000020202001
51123103131144
651345011225
710620526016
oct2300104201
9735784168
10318802049
11153a56775
128a923b15
1351081b87
14304a970d
151cec4cee
hex13008881

318802049 has 8 divisors (see below), whose sum is σ = 325377000. Its totient is φ = 312247936.

The previous prime is 318802031. The next prime is 318802061. The reversal of 318802049 is 940208813.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1024 + 318801025 = 32^2 + 17855^2 .

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 318802049 - 228 = 50366593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (314802049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27827 + ... + 37575.

It is an arithmetic number, because the mean of its divisors is an integer number (40672125).

Almost surely, 2318802049 is an apocalyptic number.

It is an amenable number.

318802049 is a deficient number, since it is larger than the sum of its proper divisors (6574951).

318802049 is an equidigital number, since it uses as much as digits as its factorization.

318802049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10419.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 318802049 is about 17855.0286754180. The cubic root of 318802049 is about 683.1357832803.

The spelling of 318802049 in words is "three hundred eighteen million, eight hundred two thousand, forty-nine".

Divisors: 1 53 617 9749 32701 516697 6015133 318802049