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83887087 = 88619467
BaseRepresentation
bin1010000000000…
…00001111101111
312211211220110011
411000000033233
5132433341322
612153554051
72036012524
oct500001757
9184756404
1083887087
1143396679
1224115927
13144c173b
14b1d914b
157570677
hex50003ef

83887087 has 4 divisors (see below), whose sum is σ = 83905416. Its totient is φ = 83868760.

The previous prime is 83887079. The next prime is 83887091. The reversal of 83887087 is 78078838.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 83887087 - 23 = 83887079 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 83887087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83887387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4128 + ... + 13594.

It is an arithmetic number, because the mean of its divisors is an integer number (20976354).

Almost surely, 283887087 is an apocalyptic number.

83887087 is a deficient number, since it is larger than the sum of its proper divisors (18329).

83887087 is an equidigital number, since it uses as much as digits as its factorization.

83887087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18328.

The product of its (nonzero) digits is 602112, while the sum is 49.

The square root of 83887087 is about 9158.9894093180. The cubic root of 83887087 is about 437.7555939961.

The spelling of 83887087 in words is "eighty-three million, eight hundred eighty-seven thousand, eighty-seven".

Divisors: 1 8861 9467 83887087