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23000012120 = 2354712234049
BaseRepresentation
bin10101011010111010…
…000101010101011000
32012100220120200012202
4111122322011111120
5334101000341440
614322134025332
71442650606631
oct253272052530
965326520182
1023000012120
1198329a8588
12455a7a8248
132227094837
1411828d2888
158e9313615
hex55ae85558

23000012120 has 32 divisors (see below), whose sum is σ = 52851096000. Its totient is φ = 9004259328.

The previous prime is 23000012099. The next prime is 23000012141. The reversal of 23000012120 is 2121000032.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (23000012099) and next prime (23000012141).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6115145 + ... + 6118904.

It is an arithmetic number, because the mean of its divisors is an integer number (1651596750).

Almost surely, 223000012120 is an apocalyptic number.

23000012120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23000012120 is an abundant number, since it is smaller than the sum of its proper divisors (29851083880).

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

23000012120 is a wasteful number, since it uses less digits than its factorization.

23000012120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12234107 (or 12234103 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 23000012120 its reverse (2121000032), we get a palindrome (25121012152).

The spelling of 23000012120 in words is "twenty-three billion, twelve thousand, one hundred twenty".

Divisors: 1 2 4 5 8 10 20 40 47 94 188 235 376 470 940 1880 12234049 24468098 48936196 61170245 97872392 122340490 244680980 489361960 575000303 1150000606 2300001212 2875001515 4600002424 5750003030 11500006060 23000012120