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87214 = 243607
BaseRepresentation
bin10101010010101110
311102122011
4111102232
510242324
61511434
7512161
oct252256
9142564
1087214
115a586
124257a
133090a
1423ad8
151ac94
hex154ae

87214 has 4 divisors (see below), whose sum is σ = 130824. Its totient is φ = 43606.

The previous prime is 87211. The next prime is 87221. The reversal of 87214 is 41278.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 41278 = 220639.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21802 + ... + 21805.

It is an arithmetic number, because the mean of its divisors is an integer number (32706).

287214 is an apocalyptic number.

87214 is a deficient number, since it is larger than the sum of its proper divisors (43610).

87214 is a wasteful number, since it uses less digits than its factorization.

87214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43609.

The product of its digits is 448, while the sum is 22.

The square root of 87214 is about 295.3201652444. The cubic root of 87214 is about 44.3467776638.

The spelling of 87214 in words is "eighty-seven thousand, two hundred fourteen".

Divisors: 1 2 43607 87214