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86204972 = 2273078749
BaseRepresentation
bin1010010001101…
…10001000101100
320000012122222202
411020312020230
5134032024342
612315401032
72064505310
oct510661054
9200178882
1086204972
114472a087
1224a53178
1314b23779
14b63db40
15787c332
hex523622c

86204972 has 12 divisors (see below), whose sum is σ = 172410000. Its totient is φ = 36944976.

The previous prime is 86204971. The next prime is 86204983. The reversal of 86204972 is 27940268.

86204972 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (86204971) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1539347 + ... + 1539402.

It is an arithmetic number, because the mean of its divisors is an integer number (14367500).

Almost surely, 286204972 is an apocalyptic number.

It is an amenable number.

86204972 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86204972 is a wasteful number, since it uses less digits than its factorization.

86204972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3078760 (or 3078758 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 86204972 is about 9284.6632679920. The cubic root of 86204972 is about 441.7508953082.

The spelling of 86204972 in words is "eighty-six million, two hundred four thousand, nine hundred seventy-two".

Divisors: 1 2 4 7 14 28 3078749 6157498 12314996 21551243 43102486 86204972