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12798748228 = 227557820643
BaseRepresentation
bin10111110101101110…
…10110011001000100
31020000222002202221011
423322313112121010
5202202434420403
65514001332004
7632110364530
oct137267263104
936028082834
1012798748228
115478617a82
122592337004
13128c799a06
14895b3cbc0
154ed94ba6d
hex2fadd6644

12798748228 has 24 divisors (see below), whose sum is σ = 25643483712. Its totient is φ = 5475323424.

The previous prime is 12798748217. The next prime is 12798748229. The reversal of 12798748228 is 82284789721.

It is not an unprimeable number, because it can be changed into a prime (12798748229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 394726 + ... + 425917.

It is an arithmetic number, because the mean of its divisors is an integer number (1068478488).

Almost surely, 212798748228 is an apocalyptic number.

It is an amenable number.

12798748228 is an abundant number, since it is smaller than the sum of its proper divisors (12844735484).

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

12798748228 is a wasteful number, since it uses less digits than its factorization.

12798748228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 821211 (or 821209 counting only the distinct ones).

The product of its digits is 7225344, while the sum is 58.

The spelling of 12798748228 in words is "twelve billion, seven hundred ninety-eight million, seven hundred forty-eight thousand, two hundred twenty-eight".

Divisors: 1 2 4 7 14 28 557 1114 2228 3899 7798 15596 820643 1641286 3282572 5744501 11489002 22978004 457098151 914196302 1828392604 3199687057 6399374114 12798748228