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82087430 = 2543190901
BaseRepresentation
bin1001110010010…
…00111000000110
312201110110210012
410321020320012
5132003244210
612051230222
72014505645
oct471107006
9181413705
1082087430
1142377557
12235a8372
1314011559
14ac8b35c
157317305
hex4e48e06

82087430 has 16 divisors (see below), whose sum is σ = 151194384. Its totient is φ = 32071200.

The previous prime is 82087417. The next prime is 82087451. The reversal of 82087430 is 3478028.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95021 + ... + 95880.

It is an arithmetic number, because the mean of its divisors is an integer number (9449649).

Almost surely, 282087430 is an apocalyptic number.

82087430 is a deficient number, since it is larger than the sum of its proper divisors (69106954).

82087430 is a wasteful number, since it uses less digits than its factorization.

82087430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190951.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 82087430 is about 9060.2113661879. The cubic root of 82087430 is about 434.6024994302.

The spelling of 82087430 in words is "eighty-two million, eighty-seven thousand, four hundred thirty".

Divisors: 1 2 5 10 43 86 215 430 190901 381802 954505 1909010 8208743 16417486 41043715 82087430