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23030002520 = 235782250009
BaseRepresentation
bin10101011100101100…
…011111001101011000
32012110000000100022022
4111130230133031120
5334131140040040
614325124514012
71443463535330
oct253454371530
965400010268
1023030002520
119848921838
12456884b908
132230365335
14118689c0c0
158ebc896b5
hex55cb1f358

23030002520 has 32 divisors (see below), whose sum is σ = 59220007200. Its totient is φ = 7896000768.

The previous prime is 23030002453. The next prime is 23030002529. The reversal of 23030002520 is 2520003032.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23030002529) 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, 41124725 + ... + 41125284.

It is an arithmetic number, because the mean of its divisors is an integer number (1850625225).

Almost surely, 223030002520 is an apocalyptic number.

23030002520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23030002520 is an abundant number, since it is smaller than the sum of its proper divisors (36190004680).

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

23030002520 is a wasteful number, since it uses less digits than its factorization.

23030002520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82250027 (or 82250023 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 17.

Adding to 23030002520 its reverse (2520003032), we get a palindrome (25550005552).

The spelling of 23030002520 in words is "twenty-three billion, thirty million, two thousand, five hundred twenty".

Divisors: 1 2 4 5 7 8 10 14 20 28 35 40 56 70 140 280 82250009 164500018 329000036 411250045 575750063 658000072 822500090 1151500126 1645000180 2303000252 2878750315 3290000360 4606000504 5757500630 11515001260 23030002520