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87007642 = 2973831171
BaseRepresentation
bin1010010111110…
…10000110011010
320001201110001021
411023322012122
5134233221032
612344513054
72104360411
oct513720632
9201643037
1087007642
1145128147
122517b78a
1315044c17
14b7ac478
15798a097
hex52fa19a

87007642 has 16 divisors (see below), whose sum is σ = 132314112. Its totient is φ = 42906240.

The previous prime is 87007633. The next prime is 87007651. The reversal of 87007642 is 24670078.

It is an interprime number because it is at equal distance from previous prime (87007633) and next prime (87007651).

It is a junction number, because it is equal to n+sod(n) for n = 87007598 and 87007607.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73717 + ... + 74887.

It is an arithmetic number, because the mean of its divisors is an integer number (8269632).

Almost surely, 287007642 is an apocalyptic number.

87007642 is a deficient number, since it is larger than the sum of its proper divisors (45306470).

87007642 is a wasteful number, since it uses less digits than its factorization.

87007642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1653.

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 87007642 is about 9327.7886982929. The cubic root of 87007642 is about 443.1177357611.

The spelling of 87007642 in words is "eighty-seven million, seven thousand, six hundred forty-two".

Divisors: 1 2 97 194 383 766 1171 2342 37151 74302 113587 227174 448493 896986 43503821 87007642