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87916 = 2231709
BaseRepresentation
bin10101011101101100
311110121011
4111131230
510303131
61515004
7514213
oct253554
9143534
1087916
1160064
1242a64
133102a
142407a
151b0b1
hex1576c

87916 has 12 divisors (see below), whose sum is σ = 159040. Its totient is φ = 42480.

The previous prime is 87911. The next prime is 87917. The reversal of 87916 is 61978.

87916 = T115 + T116 + ... + T126.

87916 is nontrivially palindromic in base 15.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (87911) 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, 231 + ... + 478.

287916 is an apocalyptic number.

It is an amenable number.

87916 is a deficient number, since it is larger than the sum of its proper divisors (71124).

87916 is a wasteful number, since it uses less digits than its factorization.

87916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 744 (or 742 counting only the distinct ones).

The product of its digits is 3024, while the sum is 31.

The square root of 87916 is about 296.5063237100. The cubic root of 87916 is about 44.4654447053.

The spelling of 87916 in words is "eighty-seven thousand, nine hundred sixteen".

Divisors: 1 2 4 31 62 124 709 1418 2836 21979 43958 87916