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52167808 = 277116779
BaseRepresentation
bin1100011100000…
…0010010000000
310122011101210001
43013000102000
5101323332213
65102045344
71202263510
oct307002200
9118141701
1052167808
11274a14a0
1215579854
13aa67034
146cdd840
1548a71dd
hex31c0480

52167808 has 128 divisors (see below), whose sum is σ = 133171200. Its totient is φ = 19768320.

The previous prime is 52167799. The next prime is 52167821. The reversal of 52167808 is 80876125.

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 660313 + ... + 660391.

It is an arithmetic number, because the mean of its divisors is an integer number (1040400).

Almost surely, 252167808 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 52167808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66585600).

52167808 is an abundant number, since it is smaller than the sum of its proper divisors (81003392).

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

52167808 is a wasteful number, since it uses less digits than its factorization.

52167808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178 (or 166 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 37.

The square root of 52167808 is about 7222.7285702842. The cubic root of 52167808 is about 373.6521879143.

It can be divided in two parts, 52167 and 808, that added together give a triangular number (52975 = T325).

The spelling of 52167808 in words is "fifty-two million, one hundred sixty-seven thousand, eight hundred eight".

Divisors: 1 2 4 7 8 11 14 16 22 28 32 44 56 64 67 77 79 88 112 128 134 154 158 176 224 268 308 316 352 448 469 536 553 616 632 704 737 869 896 938 1072 1106 1232 1264 1408 1474 1738 1876 2144 2212 2464 2528 2948 3476 3752 4288 4424 4928 5056 5159 5293 5896 6083 6952 7504 8576 8848 9856 10112 10318 10586 11792 12166 13904 15008 17696 20636 21172 23584 24332 27808 30016 35392 37051 41272 42344 47168 48664 55616 58223 60032 70784 74102 82544 84688 94336 97328 111232 116446 148204 165088 169376 194656 232892 296408 330176 338752 389312 407561 465784 592816 660352 677504 778624 815122 931568 1185632 1630244 1863136 2371264 3260488 3726272 4742528 6520976 7452544 13041952 26083904 52167808