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380134860 = 22357905083
BaseRepresentation
bin10110101010000…
…110010111001100
3222111021211222220
4112222012113030
51234303303420
6101415335340
712264043620
oct2652062714
9874254886
10380134860
11185637a46
12a7381550
13609a7691
14386b3180
152358c840
hex16a865cc

380134860 has 48 divisors (see below), whose sum is σ = 1216432896. Its totient is φ = 86887872.

The previous prime is 380134849. The next prime is 380134861. The reversal of 380134860 is 68431083.

It is not an unprimeable number, because it can be changed into a prime (380134861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 452122 + ... + 452961.

It is an arithmetic number, because the mean of its divisors is an integer number (25342352).

Almost surely, 2380134860 is an apocalyptic number.

380134860 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

380134860 is an abundant number, since it is smaller than the sum of its proper divisors (836298036).

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

380134860 is a wasteful number, since it uses less digits than its factorization.

380134860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 905102 (or 905100 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 380134860 is about 19497.0474687836. The cubic root of 380134860 is about 724.4013194798.

The spelling of 380134860 in words is "three hundred eighty million, one hundred thirty-four thousand, eight hundred sixty".

Divisors: 1 2 3 4 5 6 7 10 12 14 15 20 21 28 30 35 42 60 70 84 105 140 210 420 905083 1810166 2715249 3620332 4525415 5430498 6335581 9050830 10860996 12671162 13576245 18101660 19006743 25342324 27152490 31677905 38013486 54304980 63355810 76026972 95033715 126711620 190067430 380134860