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82804863 = 3179271569
BaseRepresentation
bin1001110111110…
…00000001111111
312202210220220210
410323320001333
5132144223423
612114443503
72023554411
oct473700177
9182726823
1082804863
1142817579
1223893593
1314202c7b
14add69b1
157409b93
hex4ef807f

82804863 has 16 divisors (see below), whose sum is σ = 111628800. Its totient is φ = 54596160.

The previous prime is 82804861. The next prime is 82804873. The reversal of 82804863 is 36840828.

It is not a de Polignac number, because 82804863 - 21 = 82804861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82804861) 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, 145243 + ... + 145811.

It is an arithmetic number, because the mean of its divisors is an integer number (6976800).

Almost surely, 282804863 is an apocalyptic number.

82804863 is a deficient number, since it is larger than the sum of its proper divisors (28823937).

82804863 is a wasteful number, since it uses less digits than its factorization.

82804863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1022.

The product of its (nonzero) digits is 73728, while the sum is 39.

The square root of 82804863 is about 9099.7177428753. The cubic root of 82804863 is about 435.8649509491.

The spelling of 82804863 in words is "eighty-two million, eight hundred four thousand, eight hundred sixty-three".

Divisors: 1 3 179 271 537 569 813 1707 48509 101851 145527 154199 305553 462597 27601621 82804863