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12528502886 = 21754121259
BaseRepresentation
bin10111010101100000…
…11100100001100110
31012100010120220000102
423222300130201212
5201124244043021
65431105144102
7622316342324
oct135260344146
935303526012
1012528502886
11534a016719
12251792b032
1312487b9323
1486bcb2d14
154d4d6900b
hex2eac1c866

12528502886 has 24 divisors (see below), whose sum is σ = 19950892920. Its totient is φ = 5880193920.

The previous prime is 12528502879. The next prime is 12528502897. The reversal of 12528502886 is 68820582521.

It is a happy number.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 12528502886.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9950525 + ... + 9951783.

It is an arithmetic number, because the mean of its divisors is an integer number (831287205).

Almost surely, 212528502886 is an apocalyptic number.

12528502886 is a deficient number, since it is larger than the sum of its proper divisors (7422390034).

12528502886 is an equidigital number, since it uses as much as digits as its factorization.

12528502886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2360 (or 1819 counting only the distinct ones).

The product of its (nonzero) digits is 614400, while the sum is 47.

The spelling of 12528502886 in words is "twelve billion, five hundred twenty-eight million, five hundred two thousand, eight hundred eighty-six".

Divisors: 1 2 17 34 541 1082 1259 2518 9197 18394 21403 42806 292681 585362 681119 1362238 4975577 9951154 11579023 23158046 368485379 736970758 6264251443 12528502886