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12412310440 = 235310307761
BaseRepresentation
bin10111000111101010…
…01101001110101000
31012001000221200221111
423203311031032220
5200410022413230
65411354520104
7616405616665
oct134365151650
935030850844
1012412310440
11529a475602
1224a4a36034
13122a6c64ba
1485a6a8a6c
154c9a6692a
hex2e3d4d3a8

12412310440 has 16 divisors (see below), whose sum is σ = 27927698580. Its totient is φ = 4964924160.

The previous prime is 12412310431. The next prime is 12412310467. The reversal of 12412310440 is 4401321421.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 12374782564 + 37527876 = 111242^2 + 6126^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155153841 + ... + 155153920.

Almost surely, 212412310440 is an apocalyptic number.

12412310440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12412310440 is an abundant number, since it is smaller than the sum of its proper divisors (15515388140).

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

12412310440 is a wasteful number, since it uses less digits than its factorization.

12412310440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310307772 (or 310307768 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 12412310440 its reverse (4401321421), we get a palindrome (16813631861).

The spelling of 12412310440 in words is "twelve billion, four hundred twelve million, three hundred ten thousand, four hundred forty".

Divisors: 1 2 4 5 8 10 20 40 310307761 620615522 1241231044 1551538805 2482462088 3103077610 6206155220 12412310440