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23030023020 = 22351074797489
BaseRepresentation
bin10101011100101100…
…100100001101101100
32012110000001101102120
4111130230210031230
5334131141214040
614325125152540
71443463652154
oct253454441554
965400041376
1023030023020
119848936184
12456885b750
132230371774
1411868a5764
158ebc907d0
hex55cb2436c

23030023020 has 96 divisors (see below), whose sum is σ = 65231308800. Its totient is φ = 6070431744.

The previous prime is 23030023019. The next prime is 23030023057. The reversal of 23030023020 is 2032003032.

It is a Harshad number since it is a multiple of its sum of digits (15).

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 31 ways as a sum of consecutive naturals, for example, 3071436 + ... + 3078924.

It is an arithmetic number, because the mean of its divisors is an integer number (679492800).

Almost surely, 223030023020 is an apocalyptic number.

23030023020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23030023020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32615654400).

23030023020 is an abundant number, since it is smaller than the sum of its proper divisors (42201285780).

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

23030023020 is a wasteful number, since it uses less digits than its factorization.

23030023020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8087 (or 8085 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 15.

Adding to 23030023020 its reverse (2032003032), we get a palindrome (25062026052).

The spelling of 23030023020 in words is "twenty-three billion, thirty million, twenty-three thousand, twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 107 214 321 428 479 535 642 958 1070 1284 1437 1605 1916 2140 2395 2874 3210 4790 5748 6420 7185 7489 9580 14370 14978 22467 28740 29956 37445 44934 51253 74890 89868 102506 112335 149780 153759 205012 224670 256265 307518 449340 512530 615036 768795 801323 1025060 1537590 1602646 2403969 3075180 3205292 3587231 4006615 4807938 7174462 8013230 9615876 10761693 12019845 14348924 16026460 17936155 21523386 24039690 35872310 43046772 48079380 53808465 71744620 107616930 215233860 383833717 767667434 1151501151 1535334868 1919168585 2303002302 3838337170 4606004604 5757505755 7676674340 11515011510 23030023020