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86103220 = 22571514073
BaseRepresentation
bin1010010000111…
…01010010110100
320000000111102011
411020131102310
5134020300340
612313254004
72063602540
oct510352264
9200014364
1086103220
114466a695
1224a04304
1314ab9368
14b614a20
15785c0ea
hex521d4b4

86103220 has 48 divisors (see below), whose sum is σ = 208067328. Its totient is φ = 29318400.

The previous prime is 86103211. The next prime is 86103247. The reversal of 86103220 is 2230168.

It is a junction number, because it is equal to n+sod(n) for n = 86103191 and 86103200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19104 + ... + 23176.

It is an arithmetic number, because the mean of its divisors is an integer number (4334736).

Almost surely, 286103220 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 86103220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104033664).

86103220 is an abundant number, since it is smaller than the sum of its proper divisors (121964108).

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

86103220 is a wasteful number, since it uses less digits than its factorization.

86103220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4240 (or 4238 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 86103220 is about 9279.1820760237. The cubic root of 86103220 is about 441.5770200554.

Adding to 86103220 its reverse (2230168), we get a palindrome (88333388).

The spelling of 86103220 in words is "eighty-six million, one hundred three thousand, two hundred twenty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 151 302 604 755 1057 1510 2114 3020 4073 4228 5285 8146 10570 16292 20365 21140 28511 40730 57022 81460 114044 142555 285110 570220 615023 1230046 2460092 3075115 4305161 6150230 8610322 12300460 17220644 21525805 43051610 86103220