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87420461527 = 743809359003
BaseRepresentation
bin101000101101010101…
…0100110000111010111
322100122111000120120101
41101122222212013113
52413014114232102
6104054351514531
76213234443140
oct1213252460727
9270574016511
1087420461527
1134090631713
1214b38b28a47
138322594859
1443344a4ac7
152419b8de87
hex145aaa61d7

87420461527 has 16 divisors (see below), whose sum is σ = 102359220480. Its totient is φ = 73098551232.

The previous prime is 87420461509. The next prime is 87420461567. The reversal of 87420461527 is 72516402478.

It is not a de Polignac number, because 87420461527 - 219 = 87419937239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87420461507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64008 + ... + 423010.

It is an arithmetic number, because the mean of its divisors is an integer number (6397451280).

Almost surely, 287420461527 is an apocalyptic number.

87420461527 is a deficient number, since it is larger than the sum of its proper divisors (14938758953).

87420461527 is a wasteful number, since it uses less digits than its factorization.

87420461527 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359862.

The product of its (nonzero) digits is 752640, while the sum is 46.

The spelling of 87420461527 in words is "eighty-seven billion, four hundred twenty million, four hundred sixty-one thousand, five hundred twenty-seven".

Divisors: 1 7 43 301 809 5663 34787 243509 359003 2513021 15437129 108059903 290433427 2033033989 12488637361 87420461527