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86816884 = 227112511123
BaseRepresentation
bin1010010110010…
…11100001110100
320001100202101011
411023023201310
5134211120014
612340442004
72102634310
oct513134164
9201322334
1086816884
11450078a0
12250a9304
1314ca914b
14b75cb40
15794d7c4
hex52cb874

86816884 has 48 divisors (see below), whose sum is σ = 190342656. Its totient is φ = 33660000.

The previous prime is 86816879. The next prime is 86816887. The reversal of 86816884 is 48861868.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86816887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76747 + ... + 77869.

It is an arithmetic number, because the mean of its divisors is an integer number (3965472).

Almost surely, 286816884 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 86816884, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95171328).

86816884 is an abundant number, since it is smaller than the sum of its proper divisors (103525772).

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

86816884 is a wasteful number, since it uses less digits than its factorization.

86816884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1396 (or 1394 counting only the distinct ones).

The product of its digits is 589824, while the sum is 49.

The square root of 86816884 is about 9317.5578345401. The cubic root of 86816884 is about 442.7936642180.

The spelling of 86816884 in words is "eighty-six million, eight hundred sixteen thousand, eight hundred eighty-four".

Divisors: 1 2 4 7 11 14 22 28 44 77 154 251 308 502 1004 1123 1757 2246 2761 3514 4492 5522 7028 7861 11044 12353 15722 19327 24706 31444 38654 49412 77308 86471 172942 281873 345884 563746 1127492 1973111 3100603 3946222 6201206 7892444 12402412 21704221 43408442 86816884