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87393 = 329131
BaseRepresentation
bin10101010101100001
311102212210
4111111201
510244033
61512333
7512535
oct252541
9142783
1087393
115a729
12426a9
1330a17
1423bc5
151ad63
hex15561

87393 has 4 divisors (see below), whose sum is σ = 116528. Its totient is φ = 58260.

The previous prime is 87383. The next prime is 87403. The reversal of 87393 is 39378.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (87383) and next prime (87403).

It is not a de Polignac number, because 87393 - 210 = 86369 is a prime.

It is a D-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 87393.

It is not an unprimeable number, because it can be changed into a prime (87313) 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, 14563 + ... + 14568.

It is an arithmetic number, because the mean of its divisors is an integer number (29132).

287393 is an apocalyptic number.

It is an amenable number.

87393 is a deficient number, since it is larger than the sum of its proper divisors (29135).

87393 is a wasteful number, since it uses less digits than its factorization.

87393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29134.

The product of its digits is 4536, while the sum is 30.

The square root of 87393 is about 295.6230708182. The cubic root of 87393 is about 44.3770963765.

It can be divided in two parts, 87 and 393, that multiplied together give a triangular number (34191 = T261).

The spelling of 87393 in words is "eighty-seven thousand, three hundred ninety-three".

Divisors: 1 3 29131 87393