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82750823 = 402720549
BaseRepresentation
bin1001110111010…
…10110101100111
312202201011210022
410323222311213
5132141011243
612113345355
72023241021
oct473526547
9182634708
1082750823
114278aa11
122386825b
13141b44ac
14adc1011
1573e8b68
hex4eead67

82750823 has 4 divisors (see below), whose sum is σ = 82775400. Its totient is φ = 82726248.

The previous prime is 82750817. The next prime is 82750867. The reversal of 82750823 is 32805728.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 82750823 - 216 = 82685287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82750523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6248 + ... + 14301.

It is an arithmetic number, because the mean of its divisors is an integer number (20693850).

Almost surely, 282750823 is an apocalyptic number.

82750823 is a deficient number, since it is larger than the sum of its proper divisors (24577).

82750823 is a wasteful number, since it uses less digits than its factorization.

82750823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24576.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 82750823 is about 9096.7479353888. The cubic root of 82750823 is about 435.7701124460.

The spelling of 82750823 in words is "eighty-two million, seven hundred fifty thousand, eight hundred twenty-three".

Divisors: 1 4027 20549 82750823