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82984831 = 361722943
BaseRepresentation
bin1001111001000…
…11111101111111
312210011001210021
410330203331333
5132221003311
612122353011
72025234166
oct474437577
9183131707
1082984831
114292a806
122395b767
1314266b67
14b0423dd
157443171
hex4f23f7f

82984831 has 4 divisors (see below), whose sum is σ = 83011392. Its totient is φ = 82958272.

The previous prime is 82984819. The next prime is 82984843. The reversal of 82984831 is 13848928.

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

It is an interprime number because it is at equal distance from previous prime (82984819) and next prime (82984843).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-82984831 is a prime.

It is a super-2 number, since 2×829848312 = 13772964352197122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82984801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7855 + ... + 15088.

It is an arithmetic number, because the mean of its divisors is an integer number (20752848).

Almost surely, 282984831 is an apocalyptic number.

82984831 is a deficient number, since it is larger than the sum of its proper divisors (26561).

82984831 is a wasteful number, since it uses less digits than its factorization.

82984831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26560.

The product of its digits is 110592, while the sum is 43.

The square root of 82984831 is about 9109.6010340739. The cubic root of 82984831 is about 436.1804919321.

The spelling of 82984831 in words is "eighty-two million, nine hundred eighty-four thousand, eight hundred thirty-one".

Divisors: 1 3617 22943 82984831