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82150750 = 2531129873
BaseRepresentation
bin1001110010110…
…00010101011110
312201120200122101
410321120111132
5132012311000
612052435314
72015161363
oct471302536
9181520571
1082150750
1142410090
1223618b3a
1314034316
14aca646a
15732ae6a
hex4e5855e

82150750 has 32 divisors (see below), whose sum is σ = 167772384. Its totient is φ = 29872000.

The previous prime is 82150741. The next prime is 82150751. The reversal of 82150750 is 5705128.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82150751) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12187 + ... + 17686.

It is an arithmetic number, because the mean of its divisors is an integer number (5242887).

Almost surely, 282150750 is an apocalyptic number.

82150750 is an abundant number, since it is smaller than the sum of its proper divisors (85621634).

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

82150750 is a wasteful number, since it uses less digits than its factorization.

82150750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29901 (or 29891 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 28.

The square root of 82150750 is about 9063.7050922898. The cubic root of 82150750 is about 434.7142175398.

Adding to 82150750 its reverse (5705128), we get a palindrome (87855878).

The spelling of 82150750 in words is "eighty-two million, one hundred fifty thousand, seven hundred fifty".

Divisors: 1 2 5 10 11 22 25 50 55 110 125 250 275 550 1375 2750 29873 59746 149365 298730 328603 657206 746825 1493650 1643015 3286030 3734125 7468250 8215075 16430150 41075375 82150750