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12145000490 = 257191908377
BaseRepresentation
bin10110100111110011…
…00000000000101010
31011100101221221121222
423103321200000222
5144333110003430
65325045302042
7606651541460
oct132371400052
934311857558
1012145000490
115172599697
12242b404922
1311b7202c2c
14832da4830
154b13639e5
hex2d3e6002a

12145000490 has 32 divisors (see below), whose sum is σ = 25114834944. Its totient is φ = 4142194560.

The previous prime is 12145000489. The next prime is 12145000499. The reversal of 12145000490 is 9400054121.

It is not an unprimeable number, because it can be changed into a prime (12145000499) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 440819 + ... + 467558.

It is an arithmetic number, because the mean of its divisors is an integer number (784838592).

Almost surely, 212145000490 is an apocalyptic number.

12145000490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12145000490 is an abundant number, since it is smaller than the sum of its proper divisors (12969834454).

12145000490 is a wasteful number, since it uses less digits than its factorization.

12145000490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 908582.

The product of its (nonzero) digits is 1440, while the sum is 26.

The spelling of 12145000490 in words is "twelve billion, one hundred forty-five million, four hundred ninety", and thus it is an aban number.

Divisors: 1 2 5 7 10 14 35 70 191 382 955 1337 1910 2674 6685 13370 908377 1816754 4541885 6358639 9083770 12717278 31793195 63586390 173500007 347000014 867500035 1214500049 1735000070 2429000098 6072500245 12145000490