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8005380 = 2235235801
BaseRepresentation
bin11110100010011100000100
3120001201022120
4132202130010
54022133010
6443325540
7125021205
oct36423404
916051276
108005380
114578619
1228208b0
131873a16
1410c55ac
15a81e70
hex7a2704

8005380 has 48 divisors (see below), whose sum is σ = 23393664. Its totient is φ = 2041600.

The previous prime is 8005379. The next prime is 8005391. The reversal of 8005380 is 835008.

It is a super-2 number, since 2×80053802 = 128172217888800, which contains 22 as substring.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 8005380.

It is a congruent number.

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, 1521 + ... + 4280.

It is an arithmetic number, because the mean of its divisors is an integer number (487368).

Almost surely, 28005380 is an apocalyptic number.

It is an amenable number.

8005380 is an abundant number, since it is smaller than the sum of its proper divisors (15388284).

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

8005380 is a wasteful number, since it uses less digits than its factorization.

8005380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5836 (or 5834 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 8005380 is about 2829.3780235239. The cubic root of 8005380 is about 200.0448232869.

It can be divided in two parts, 8005 and 380, that added together give a triangular number (8385 = T129).

The spelling of 8005380 in words is "eight million, five thousand, three hundred eighty".

Divisors: 1 2 3 4 5 6 10 12 15 20 23 30 46 60 69 92 115 138 230 276 345 460 690 1380 5801 11602 17403 23204 29005 34806 58010 69612 87015 116020 133423 174030 266846 348060 400269 533692 667115 800538 1334230 1601076 2001345 2668460 4002690 8005380