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83236345 = 516939833
BaseRepresentation
bin1001111011000…
…01010111111001
312210121211210121
410331201113321
5132302030340
612132013241
72030332363
oct475412771
9183554717
1083236345
1142a91775
1223a61221
131432449a
14b0a9d33
15749294a
hex4f615f9

83236345 has 8 divisors (see below), whose sum is σ = 99952776. Its totient is φ = 66542976.

The previous prime is 83236343. The next prime is 83236367. The reversal of 83236345 is 54363238.

It can be written as a sum of positive squares in 4 ways, for example, as 6007401 + 77228944 = 2451^2 + 8788^2 .

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 83236345 - 21 = 83236343 is a prime.

It is an alternating number because its digits alternate between even and odd.

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 83236345.

It is not an unprimeable number, because it can be changed into a prime (83236343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3549 + ... + 13381.

It is an arithmetic number, because the mean of its divisors is an integer number (12494097).

Almost surely, 283236345 is an apocalyptic number.

It is an amenable number.

83236345 is a deficient number, since it is larger than the sum of its proper divisors (16716431).

83236345 is a wasteful number, since it uses less digits than its factorization.

83236345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11531.

The product of its digits is 51840, while the sum is 34.

The square root of 83236345 is about 9123.3954753699. The cubic root of 83236345 is about 436.6207123587.

The spelling of 83236345 in words is "eighty-three million, two hundred thirty-six thousand, three hundred forty-five".

Divisors: 1 5 1693 8465 9833 49165 16647269 83236345