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12154950270 = 2325317955147
BaseRepresentation
bin10110101000111110…
…11101001001111110
31011101002200110011100
423110133131021332
5144343131402040
65330042433530
7610132241541
oct132437351176
934332613140
1012154950270
115178175051
1224328028a6
1311b92a7988
14834434858
154b217bb30
hex2d47dd27e

12154950270 has 96 divisors (see below), whose sum is σ = 33035857920. Its totient is φ = 3096999360.

The previous prime is 12154950263. The next prime is 12154950271. The reversal of 12154950270 is 7205945121.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12154950271) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 192837 + ... + 247983.

It is an arithmetic number, because the mean of its divisors is an integer number (344123520).

Almost surely, 212154950270 is an apocalyptic number.

12154950270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12154950270, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16517928960).

12154950270 is an abundant number, since it is smaller than the sum of its proper divisors (20880907650).

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

12154950270 is a wasteful number, since it uses less digits than its factorization.

12154950270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55270 (or 55267 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 36.

The spelling of 12154950270 in words is "twelve billion, one hundred fifty-four million, nine hundred fifty thousand, two hundred seventy".

Divisors: 1 2 3 5 6 9 10 15 18 30 31 45 62 79 90 93 155 158 186 237 279 310 395 465 474 558 711 790 930 1185 1395 1422 2370 2449 2790 3555 4898 7110 7347 12245 14694 22041 24490 36735 44082 55147 73470 110205 110294 165441 220410 275735 330882 496323 551470 827205 992646 1654410 1709557 2481615 3419114 4356613 4963230 5128671 8547785 8713226 10257342 13069839 15386013 17095570 21783065 25643355 26139678 30772026 39209517 43566130 51286710 65349195 76930065 78419034 130698390 135055003 153860130 196047585 270110006 392095170 405165009 675275015 810330018 1215495027 1350550030 2025825045 2430990054 4051650090 6077475135 12154950270