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52120880 = 2457163571
BaseRepresentation
bin1100011011010…
…0110100110000
310122002000101222
43012310310300
5101320332010
65101044212
71202006630
oct306646460
9118060358
1052120880
112746a209
1215556668
13aa4b876
146cca6c0
154898355
hex31b4d30

52120880 has 80 divisors (see below), whose sum is σ = 139586304. Its totient is φ = 17729280.

The previous prime is 52120879. The next prime is 52120907. The reversal of 52120880 is 8802125.

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

It is a super-2 number, since 2×521208802 = 5433172263948800, which contains 22 as substring.

It is a plaindrome in base 12.

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, 90995 + ... + 91565.

Almost surely, 252120880 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 52120880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69793152).

52120880 is an abundant number, since it is smaller than the sum of its proper divisors (87465424).

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

52120880 is a wasteful number, since it uses less digits than its factorization.

52120880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 754 (or 748 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 26.

The square root of 52120880 is about 7219.4792055937. The cubic root of 52120880 is about 373.5401136229.

The spelling of 52120880 in words is "fifty-two million, one hundred twenty thousand, eight hundred eighty".

Divisors: 1 2 4 5 7 8 10 14 16 20 28 35 40 56 70 80 112 140 163 280 326 560 571 652 815 1141 1142 1304 1630 2282 2284 2608 2855 3260 3997 4564 4568 5705 5710 6520 7994 9128 9136 11410 11420 13040 15988 18256 19985 22820 22840 31976 39970 45640 45680 63952 79940 91280 93073 159880 186146 319760 372292 465365 651511 744584 930730 1303022 1489168 1861460 2606044 3257555 3722920 5212088 6515110 7445840 10424176 13030220 26060440 52120880