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87007304 = 2310875913
BaseRepresentation
bin1010010111110…
…10000001001000
320001201102120202
411023322001020
5134233213204
612344511332
72104356416
oct513720110
9201642522
1087007304
114512796a
122517b548
1315044a17
14b7ac2b6
157989e1e
hex52fa048

87007304 has 8 divisors (see below), whose sum is σ = 163138710. Its totient is φ = 43503648.

The previous prime is 87007303. The next prime is 87007357. The reversal of 87007304 is 40370078.

It can be written as a sum of positive squares in only one way, i.e., 85562500 + 1444804 = 9250^2 + 1202^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (87007301) 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 as a sum of consecutive naturals, namely, 5437949 + ... + 5437964.

Almost surely, 287007304 is an apocalyptic number.

It is an amenable number.

87007304 is a deficient number, since it is larger than the sum of its proper divisors (76131406).

87007304 is a wasteful number, since it uses less digits than its factorization.

87007304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10875919 (or 10875915 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 87007304 is about 9327.7705803691. The cubic root of 87007304 is about 443.1171619648.

The spelling of 87007304 in words is "eighty-seven million, seven thousand, three hundred four".

Divisors: 1 2 4 8 10875913 21751826 43503652 87007304