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82987948 = 22171220411
BaseRepresentation
bin1001111001001…
…00101110101100
312210011020001201
410330210232230
5132221103243
612122415244
72025246241
oct474445654
9183136051
1082987948
114293208a
1223961524
13142683c4
14b0435c8
15744404d
hex4f24bac

82987948 has 12 divisors (see below), whose sum is σ = 153771912. Its totient is φ = 39053120.

The previous prime is 82987921. The next prime is 82987951. The reversal of 82987948 is 84978928.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 610138 + ... + 610273.

It is an arithmetic number, because the mean of its divisors is an integer number (12814326).

Almost surely, 282987948 is an apocalyptic number.

It is an amenable number.

82987948 is a deficient number, since it is larger than the sum of its proper divisors (70783964).

82987948 is a wasteful number, since it uses less digits than its factorization.

82987948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1220432 (or 1220430 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 55.

The square root of 82987948 is about 9109.7721157008. The cubic root of 82987948 is about 436.1859530007.

The spelling of 82987948 in words is "eighty-two million, nine hundred eighty-seven thousand, nine hundred forty-eight".

Divisors: 1 2 4 17 34 68 1220411 2440822 4881644 20746987 41493974 82987948