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87236 = 22113193
BaseRepresentation
bin10101010011000100
311102122222
4111103010
510242421
61511512
7512222
oct252304
9142588
1087236
115a5a6
1242598
1330926
1423b12
151acab
hex154c4

87236 has 12 divisors (see below), whose sum is σ = 154812. Its totient is φ = 43008.

The previous prime is 87223. The next prime is 87251. The reversal of 87236 is 63278.

It can be written as a sum of positive squares in 2 ways, for example, as 8836 + 78400 = 94^2 + 280^2 .

It is a super-2 number, since 2×872362 = 15220239392, which contains 22 as substring.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 356 + ... + 548.

It is an arithmetic number, because the mean of its divisors is an integer number (12901).

287236 is an apocalyptic number.

It is an amenable number.

87236 is a deficient number, since it is larger than the sum of its proper divisors (67576).

87236 is a wasteful number, since it uses less digits than its factorization.

87236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310 (or 308 counting only the distinct ones).

The product of its digits is 2016, while the sum is 26.

The square root of 87236 is about 295.3574106062. The cubic root of 87236 is about 44.3505062207.

It can be divided in two parts, 87 and 236, that added together give a palindrome (323).

The spelling of 87236 in words is "eighty-seven thousand, two hundred thirty-six".

Divisors: 1 2 4 113 193 226 386 452 772 21809 43618 87236