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87160379 = 769911321
BaseRepresentation
bin1010011000111…
…11011000111011
320002000012120012
411030133120323
5134303113004
612352052135
72105564615
oct514373073
9202005505
1087160379
1145221979
122523404b
13150995b7
14b80bdb5
1579ba46e
hex531f63b

87160379 has 4 divisors (see below), whose sum is σ = 87179400. Its totient is φ = 87141360.

The previous prime is 87160373. The next prime is 87160387. The reversal of 87160379 is 97306178.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-87160379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87160373) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2039 + ... + 13359.

It is an arithmetic number, because the mean of its divisors is an integer number (21794850).

Almost surely, 287160379 is an apocalyptic number.

87160379 is a deficient number, since it is larger than the sum of its proper divisors (19021).

87160379 is a wasteful number, since it uses less digits than its factorization.

87160379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19020.

The product of its (nonzero) digits is 63504, while the sum is 41.

The square root of 87160379 is about 9335.9723114414. The cubic root of 87160379 is about 443.3768735700.

The spelling of 87160379 in words is "eighty-seven million, one hundred sixty thousand, three hundred seventy-nine".

Divisors: 1 7699 11321 87160379