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99860 = 2254993
BaseRepresentation
bin11000011000010100
312001222112
4120120110
511143420
62050152
7564065
oct303024
9161875
1099860
1169032
1249958
13365b7
142856c
151e8c5
hex18614

99860 has 12 divisors (see below), whose sum is σ = 209748. Its totient is φ = 39936.

The previous prime is 99859. The next prime is 99871. The reversal of 99860 is 6899.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 35344 + 64516 = 188^2 + 254^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a nialpdrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2477 + ... + 2516.

It is an arithmetic number, because the mean of its divisors is an integer number (17479).

299860 is an apocalyptic number.

It is an amenable number.

99860 is an abundant number, since it is smaller than the sum of its proper divisors (109888).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104874).

99860 is a wasteful number, since it uses less digits than its factorization.

99860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5002 (or 5000 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 99860 is about 316.0063290505. The cubic root of 99860 is about 46.3942174720.

It can be divided in two parts, 99 and 860, that added together give a palindrome (959).

The spelling of 99860 in words is "ninety-nine thousand, eight hundred sixty".

Divisors: 1 2 4 5 10 20 4993 9986 19972 24965 49930 99860