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33023120 = 24513113281
BaseRepresentation
bin111110111111…
…0010010010000
32022010202012112
41331332102100
531423214440
63135444452
7550456214
oct175762220
968122175
1033023120
1117705839
12b086728
136ac3010
144558944
152d74965
hex1f7e490

33023120 has 80 divisors (see below), whose sum is σ = 83713392. Its totient is φ = 12042240.

The previous prime is 33023119. The next prime is 33023171. The reversal of 33023120 is 2132033.

It can be written as a sum of positive squares in 8 ways, for example, as 7661824 + 25361296 = 2768^2 + 5036^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 33023095 and 33023104.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117380 + ... + 117660.

Almost surely, 233023120 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 33023120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41856696).

33023120 is an abundant number, since it is smaller than the sum of its proper divisors (50690272).

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

33023120 is a wasteful number, since it uses less digits than its factorization.

33023120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420 (or 414 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 14.

The square root of 33023120 is about 5746.5746319003. The cubic root of 33023120 is about 320.8283227793.

Adding to 33023120 its reverse (2132033), we get a palindrome (35155153).

The spelling of 33023120 in words is "thirty-three million, twenty-three thousand, one hundred twenty".

Divisors: 1 2 4 5 8 10 13 16 20 26 40 52 65 80 104 113 130 208 226 260 281 452 520 562 565 904 1040 1124 1130 1405 1469 1808 2248 2260 2810 2938 3653 4496 4520 5620 5876 7306 7345 9040 11240 11752 14612 14690 18265 22480 23504 29224 29380 31753 36530 58448 58760 63506 73060 117520 127012 146120 158765 254024 292240 317530 412789 508048 635060 825578 1270120 1651156 2063945 2540240 3302312 4127890 6604624 8255780 16511560 33023120