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12380958 = 2331132029
BaseRepresentation
bin101111001110…
…101100011110
3212022000111000
4233032230132
511132142313
61121211130
7210144042
oct57165436
925260430
1012380958
116a96aa7
124190aa6
132746515
141904022
151148673
hexbceb1e

12380958 has 32 divisors (see below), whose sum is σ = 27770400. Its totient is φ = 4088448.

The previous prime is 12380957. The next prime is 12380971. The reversal of 12380958 is 85908321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12380957) 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, 5088 + ... + 7116.

It is an arithmetic number, because the mean of its divisors is an integer number (867825).

Almost surely, 212380958 is an apocalyptic number.

12380958 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12380958, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13885200).

12380958 is an abundant number, since it is smaller than the sum of its proper divisors (15389442).

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

12380958 is a wasteful number, since it uses less digits than its factorization.

12380958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2153 (or 2147 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 12380958 is about 3518.6585512095. The cubic root of 12380958 is about 231.3403651705.

The spelling of 12380958 in words is "twelve million, three hundred eighty thousand, nine hundred fifty-eight".

Divisors: 1 2 3 6 9 18 27 54 113 226 339 678 1017 2029 2034 3051 4058 6087 6102 12174 18261 36522 54783 109566 229277 458554 687831 1375662 2063493 4126986 6190479 12380958