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12440101302 = 232691116739
BaseRepresentation
bin10111001010111110…
…01110000110110110
31012002222020121211200
423211133032012312
5200434131220202
65414230313330
7620164054626
oct134537160666
935088217750
1012440101302
115304127262
1224b21b8846
1312333a6ab5
14860260886
154cc205e1c
hex2e57ce1b6

12440101302 has 12 divisors (see below), whose sum is σ = 26953552860. Its totient is φ = 4146700428.

The previous prime is 12440101277. The next prime is 12440101313. The reversal of 12440101302 is 20310104421.

It is a super-2 number, since 2×124401013022 (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 691116739 = 12440101302 / (1 + 2 + 4 + 4 + 0 + 1 + 0 + 1 + 3 + 0 + 2).

It is a congruent number.

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, 345558352 + ... + 345558387.

It is an arithmetic number, because the mean of its divisors is an integer number (2246129405).

Almost surely, 212440101302 is an apocalyptic number.

12440101302 is an abundant number, since it is smaller than the sum of its proper divisors (14513451558).

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

12440101302 is a wasteful number, since it uses less digits than its factorization.

12440101302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691116747 (or 691116744 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 12440101302 its reverse (20310104421), we get a palindrome (32750205723).

The spelling of 12440101302 in words is "twelve billion, four hundred forty million, one hundred one thousand, three hundred two".

Divisors: 1 2 3 6 9 18 691116739 1382233478 2073350217 4146700434 6220050651 12440101302