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87730467 = 31119139921
BaseRepresentation
bin1010011101010…
…10100100100011
320010002011120120
411032222210203
5134424333332
612412211323
72113460646
oct516524443
9203064516
1087730467
1145581220
1225469b43
1315238c26
14b919a5d
157a7e32c
hex53aa923

87730467 has 16 divisors (see below), whose sum is σ = 134325120. Its totient is φ = 50371200.

The previous prime is 87730439. The next prime is 87730471. The reversal of 87730467 is 76403778.

It is not a de Polignac number, because 87730467 - 27 = 87730339 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87730417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69334 + ... + 70587.

It is an arithmetic number, because the mean of its divisors is an integer number (8395320).

Almost surely, 287730467 is an apocalyptic number.

87730467 is a deficient number, since it is larger than the sum of its proper divisors (46594653).

87730467 is a wasteful number, since it uses less digits than its factorization.

87730467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139954.

The product of its (nonzero) digits is 197568, while the sum is 42.

The square root of 87730467 is about 9366.4543451618. The cubic root of 87730467 is about 444.3414354862.

The spelling of 87730467 in words is "eighty-seven million, seven hundred thirty thousand, four hundred sixty-seven".

Divisors: 1 3 11 19 33 57 209 627 139921 419763 1539131 2658499 4617393 7975497 29243489 87730467