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23879725780 = 2252943979871
BaseRepresentation
bin10110001111010101…
…111011001011010100
32021122012220202111011
4112033111323023110
5342401202211110
614545321222004
71503522214531
oct261725731324
967565822434
1023879725780
11a144534469
124765331904
132337407671
14122768bd88
1594b68448a
hex58f57b2d4

23879725780 has 96 divisors (see below), whose sum is σ = 53635760640. Its totient is φ = 8914268160.

The previous prime is 23879725769. The next prime is 23879725811. The reversal of 23879725780 is 8752797832.

It is a Harshad number since it is a multiple of its sum of digits (58).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2414245 + ... + 2424115.

It is an arithmetic number, because the mean of its divisors is an integer number (558705840).

Almost surely, 223879725780 is an apocalyptic number.

23879725780 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 23879725780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26817880320).

23879725780 is an abundant number, since it is smaller than the sum of its proper divisors (29756034860).

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

23879725780 is a wasteful number, since it uses less digits than its factorization.

23879725780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10049 (or 10047 counting only the distinct ones).

The product of its (nonzero) digits is 11854080, while the sum is 58.

The spelling of 23879725780 in words is "twenty-three billion, eight hundred seventy-nine million, seven hundred twenty-five thousand, seven hundred eighty".

Divisors: 1 2 4 5 10 20 29 43 58 86 97 116 145 172 194 215 290 388 430 485 580 860 970 1247 1940 2494 2813 4171 4988 5626 6235 8342 9871 11252 12470 14065 16684 19742 20855 24940 28130 39484 41710 49355 56260 83420 98710 120959 197420 241918 286259 424453 483836 572518 604795 848906 957487 1145036 1209590 1431295 1697812 1914974 2122265 2419180 2862590 3829948 4244530 4787435 5725180 8489060 9574870 12309137 19149740 24618274 27767123 41171941 49236548 55534246 61545685 82343882 111068492 123091370 138835615 164687764 205859705 246182740 277671230 411719410 555342460 823438820 1193986289 2387972578 4775945156 5969931445 11939862890 23879725780