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87430446136 = 23111207182307
BaseRepresentation
bin101000101101101000…
…0101011110000111000
322100200011210211212201
41101123100223300320
52413024143234021
6104055345515544
76213415346605
oct1213320536070
9270604724781
1087430446136
1134096231260
1214b40342bb4
13832467c3c7
1443359436ac
15241a9b2591
hex145b42bc38

87430446136 has 32 divisors (see below), whose sum is σ = 178851991680. Its totient is φ = 39737336800.

The previous prime is 87430446119. The next prime is 87430446137. The reversal of 87430446136 is 63164403478.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87430446137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1021095 + ... + 1103401.

It is an arithmetic number, because the mean of its divisors is an integer number (5589124740).

Almost surely, 287430446136 is an apocalyptic number.

It is an amenable number.

87430446136 is an abundant number, since it is smaller than the sum of its proper divisors (91421545544).

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

87430446136 is a wasteful number, since it uses less digits than its factorization.

87430446136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94395 (or 94391 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 46.

The spelling of 87430446136 in words is "eighty-seven billion, four hundred thirty million, four hundred forty-six thousand, one hundred thirty-six".

Divisors: 1 2 4 8 11 22 44 88 12071 24142 48284 82307 96568 132781 164614 265562 329228 531124 658456 905377 1062248 1810754 3621508 7243016 993527797 1987055594 3974111188 7948222376 10928805767 21857611534 43715223068 87430446136