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BaseRepresentation
bin10101011100000000
311110110011
4111130000
510302213
61514304
7514000
oct253400
9143404
1087808
115aa76
1242994
1330c76
1424000
151b03d
hex15700

87808 has 36 divisors (see below), whose sum is σ = 204400. Its totient is φ = 37632.

The previous prime is 87803. The next prime is 87811. The reversal of 87808 is 80878.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is a self number, because there is not a number n which added to its sum of digits gives 87808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87803) 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, 12541 + ... + 12547.

287808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102200).

87808 is an abundant number, since it is smaller than the sum of its proper divisors (116592).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87808 is an frugal number, since it uses more digits than its factorization.

87808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37 (or 9 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 31.

The square root of 87808 is about 296.3241468392. The cubic root of 87808 is about 44.4472294551.

The spelling of 87808 in words is "eighty-seven thousand, eight hundred eight".