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82315984 = 245144749
BaseRepresentation
bin1001110100000…
…00101011010000
312201220002022011
410322000223100
5132033102414
612100152304
72016450202
oct472005320
9181802264
1082315984
1142513243
1223698694
13140915aa
14ad0a772
15735edc4
hex4e80ad0

82315984 has 10 divisors (see below), whose sum is σ = 159487250. Its totient is φ = 41157984.

The previous prime is 82315967. The next prime is 82316027. The reversal of 82315984 is 48951328.

It can be written as a sum of positive squares in only one way, i.e., 49000000 + 33315984 = 7000^2 + 5772^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2572359 + ... + 2572390.

It is an arithmetic number, because the mean of its divisors is an integer number (15948725).

Almost surely, 282315984 is an apocalyptic number.

It is an amenable number.

82315984 is a deficient number, since it is larger than the sum of its proper divisors (77171266).

82315984 is a wasteful number, since it uses less digits than its factorization.

82315984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5144757 (or 5144751 counting only the distinct ones).

The product of its digits is 69120, while the sum is 40.

The square root of 82315984 is about 9072.8156599812. The cubic root of 82315984 is about 435.0054766563.

It can be divided in two parts, 823 and 15984, that added together give a 5-th power (16807 = 75).

The spelling of 82315984 in words is "eighty-two million, three hundred fifteen thousand, nine hundred eighty-four".

Divisors: 1 2 4 8 16 5144749 10289498 20578996 41157992 82315984