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82752831 = 32737131271
BaseRepresentation
bin1001110111010…
…11010100111111
312202201021112200
410323223110333
5132141042311
612113402543
72023246620
oct473532477
9182637480
1082752831
1142791477
1223869453
13141b5395
14adc1a47
1573e9556
hex4eeb53f

82752831 has 48 divisors (see below), whose sum is σ = 141892608. Its totient is φ = 45489600.

The previous prime is 82752829. The next prime is 82752841. The reversal of 82752831 is 13825728.

It is not a de Polignac number, because 82752831 - 21 = 82752829 is a prime.

It is a super-2 number, since 2×827528312 = 13696062077029122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82752841) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 305226 + ... + 305496.

It is an arithmetic number, because the mean of its divisors is an integer number (2956096).

Almost surely, 282752831 is an apocalyptic number.

82752831 is a deficient number, since it is larger than the sum of its proper divisors (59139777).

82752831 is a wasteful number, since it uses less digits than its factorization.

82752831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452 (or 449 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 82752831 is about 9096.8583038322. The cubic root of 82752831 is about 435.7736371614.

The spelling of 82752831 in words is "eighty-two million, seven hundred fifty-two thousand, eight hundred thirty-one".

Divisors: 1 3 7 9 21 37 63 111 131 259 271 333 393 777 813 917 1179 1897 2331 2439 2751 4847 5691 8253 10027 14541 17073 30081 33929 35501 43623 70189 90243 101787 106503 210567 248507 305361 319509 631701 745521 1313537 2236563 3940611 9194759 11821833 27584277 82752831