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12430231240 = 2357306114503
BaseRepresentation
bin10111001001110011…
…00100011011001000
31012002021200011122211
423210321210123020
5200424114344430
65413234554504
7620014136140
oct134471443310
935067604584
1012430231240
1152a95a5789
1224aaa38a34
13123132c41b
1485cc11920
154cb40672a
hex2e4e646c8

12430231240 has 64 divisors (see below), whose sum is σ = 31976098560. Its totient is φ = 4260107520.

The previous prime is 12430231171. The next prime is 12430231267. The reversal of 12430231240 is 4213203421.

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, 849829 + ... + 864331.

It is an arithmetic number, because the mean of its divisors is an integer number (499626540).

Almost surely, 212430231240 is an apocalyptic number.

12430231240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12430231240 is an abundant number, since it is smaller than the sum of its proper divisors (19545867320).

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

12430231240 is a wasteful number, since it uses less digits than its factorization.

12430231240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17582 (or 17578 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 12430231240 its reverse (4213203421), we get a palindrome (16643434661).

The spelling of 12430231240 in words is "twelve billion, four hundred thirty million, two hundred thirty-one thousand, two hundred forty".

Divisors: 1 2 4 5 7 8 10 14 20 28 35 40 56 70 140 280 3061 6122 12244 14503 15305 21427 24488 29006 30610 42854 58012 61220 72515 85708 101521 107135 116024 122440 145030 171416 203042 214270 290060 406084 428540 507605 580120 812168 857080 1015210 2030420 4060840 44393683 88787366 177574732 221968415 310755781 355149464 443936830 621511562 887873660 1243023124 1553778905 1775747320 2486046248 3107557810 6215115620 12430231240