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86148220 = 2251312251
BaseRepresentation
bin1010010001010…
…00010001111100
320000002210010211
411020220101330
5134023220340
612314242204
72064150664
oct510502174
9200083124
1086148220
11446a0484
1224a26364
1314b039a2
14b6271a4
15786a5ea
hex522847c

86148220 has 36 divisors (see below), whose sum is σ = 183029112. Its totient is φ = 34060000.

The previous prime is 86148187. The next prime is 86148233. The reversal of 86148220 is 2284168.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 343095 + ... + 343345.

It is an arithmetic number, because the mean of its divisors is an integer number (5084142).

Almost surely, 286148220 is an apocalyptic number.

It is an amenable number.

86148220 is an abundant number, since it is smaller than the sum of its proper divisors (96880892).

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

86148220 is a wasteful number, since it uses less digits than its factorization.

86148220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522 (or 389 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 86148220 is about 9281.6065419732. The cubic root of 86148220 is about 441.6539335754.

It can be divided in two parts, 86148 and 220, that added together give a palindrome (86368).

The spelling of 86148220 in words is "eighty-six million, one hundred forty-eight thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 131 251 262 502 524 655 1004 1255 1310 2510 2620 5020 17161 32881 34322 65762 68644 85805 131524 164405 171610 328810 343220 657620 4307411 8614822 17229644 21537055 43074110 86148220