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318006836 = 22711357387
BaseRepresentation
bin10010111101000…
…110011000110100
3211011101102100222
4102331012120310
51122402204321
651315553512
710611004430
oct2275063064
9734342328
10318006836
11153563274
128a5bb898
1350b63c34
143033d9c0
151cdb93ab
hex12f46634

318006836 has 12 divisors (see below), whose sum is σ = 636013728. Its totient is φ = 136288632.

The previous prime is 318006827. The next prime is 318006839. The reversal of 318006836 is 638600813.

It is a happy number.

318006836 is an admirable number.

It is a super-2 number, since 2×3180068362 = 202256695485461792, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 318006796 and 318006805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (318006839) 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, 5678666 + ... + 5678721.

It is an arithmetic number, because the mean of its divisors is an integer number (53001144).

Almost surely, 2318006836 is an apocalyptic number.

It is an amenable number.

318006836 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

318006836 is a wasteful number, since it uses less digits than its factorization.

318006836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11357398 (or 11357396 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 318006836 is about 17832.7461710192. The cubic root of 318006836 is about 682.5673106025.

The spelling of 318006836 in words is "three hundred eighteen million, six thousand, eight hundred thirty-six".

Divisors: 1 2 4 7 14 28 11357387 22714774 45429548 79501709 159003418 318006836