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12394628900 = 2252123946289
BaseRepresentation
bin10111000101100011…
…10000011100100100
31011222210200101102122
423202301300130210
5200341011111100
65405523525112
7616102415213
oct134261603444
934883611378
1012394628900
115290499165
12249ab29798
131226b45454
148581c507a
154c8222985
hex2e2c70724

12394628900 has 18 divisors (see below), whose sum is σ = 26896344930. Its totient is φ = 4957851520.

The previous prime is 12394628867. The next prime is 12394628903. The reversal of 12394628900 is 982649321.

It can be written as a sum of positive squares in 3 ways, for example, as 2857543936 + 9537084964 = 53456^2 + 97658^2 .

It is not an unprimeable number, because it can be changed into a prime (12394628903) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 61973045 + ... + 61973244.

It is an arithmetic number, because the mean of its divisors is an integer number (1494241385).

Almost surely, 212394628900 is an apocalyptic number.

12394628900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12394628900 is an abundant number, since it is smaller than the sum of its proper divisors (14501716030).

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

12394628900 is a wasteful number, since it uses less digits than its factorization.

12394628900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123946303 (or 123946296 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 44.

The spelling of 12394628900 in words is "twelve billion, three hundred ninety-four million, six hundred twenty-eight thousand, nine hundred".

Divisors: 1 2 4 5 10 20 25 50 100 123946289 247892578 495785156 619731445 1239462890 2478925780 3098657225 6197314450 12394628900