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12444442002 = 232691357889
BaseRepresentation
bin10111001011011111…
…10001110110010010
31012010021102011011100
423211233301312102
5200441234121002
65414503325230
7620246004006
oct134557616622
935107364140
1012444442002
115306621513
1224b3750816
131234266765
14860a70706
154cc7b211c
hex2e5bf1d92

12444442002 has 12 divisors (see below), whose sum is σ = 26962957710. Its totient is φ = 4148147328.

The previous prime is 12444441979. The next prime is 12444442033. The reversal of 12444442002 is 20024444421.

12444442002 is a `hidden beast` number, since 12 + 4 + 4 + 444 + 200 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 11552165361 + 892276641 = 107481^2 + 29871^2 .

It is a super-2 number, since 2×124444420022 (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 345678927 + ... + 345678962.

Almost surely, 212444442002 is an apocalyptic number.

12444442002 is an abundant number, since it is smaller than the sum of its proper divisors (14518515708).

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

12444442002 is a wasteful number, since it uses less digits than its factorization.

12444442002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691357897 (or 691357894 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 27.

Adding to 12444442002 its reverse (20024444421), we get a palindrome (32468886423).

The spelling of 12444442002 in words is "twelve billion, four hundred forty-four million, four hundred forty-two thousand, two".

Divisors: 1 2 3 6 9 18 691357889 1382715778 2074073667 4148147334 6222221001 12444442002