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82528340 = 2254126417
BaseRepresentation
bin1001110101101…
…00100001010100
312202021212121012
410322310201110
5132111401330
612104511352
72021323256
oct472644124
9182255535
1082528340
1142648844
122377b558
131413714b
14ad63cd6
1573a2c95
hex4eb4854

82528340 has 12 divisors (see below), whose sum is σ = 173309556. Its totient is φ = 33011328.

The previous prime is 82528337. The next prime is 82528349. The reversal of 82528340 is 4382528.

It can be written as a sum of positive squares in 2 ways, for example, as 48469444 + 34058896 = 6962^2 + 5836^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 82528297 and 82528306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82528349) 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, 2063189 + ... + 2063228.

It is an arithmetic number, because the mean of its divisors is an integer number (14442463).

Almost surely, 282528340 is an apocalyptic number.

It is an amenable number.

82528340 is an abundant number, since it is smaller than the sum of its proper divisors (90781216).

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

82528340 is a wasteful number, since it uses less digits than its factorization.

82528340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4126426 (or 4126424 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 32.

The square root of 82528340 is about 9084.5109939941. The cubic root of 82528340 is about 435.3792262652.

The spelling of 82528340 in words is "eighty-two million, five hundred twenty-eight thousand, three hundred forty".

Divisors: 1 2 4 5 10 20 4126417 8252834 16505668 20632085 41264170 82528340