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12380719 = 13952363
BaseRepresentation
bin101111001110…
…101000101111
3212022000011011
4233032220233
511132140334
61121210051
7210143251
oct57165057
925260134
1012380719
116a968aa
124190927
132746390
141903cd1
151148564
hexbcea2f

12380719 has 4 divisors (see below), whose sum is σ = 13333096. Its totient is φ = 11428344.

The previous prime is 12380717. The next prime is 12380759. The reversal of 12380719 is 91708321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12380719 - 21 = 12380717 is a prime.

It is a super-3 number, since 3×123807193 (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12380717) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 476169 + ... + 476194.

It is an arithmetic number, because the mean of its divisors is an integer number (3333274).

Almost surely, 212380719 is an apocalyptic number.

12380719 is a deficient number, since it is larger than the sum of its proper divisors (952377).

12380719 is an equidigital number, since it uses as much as digits as its factorization.

12380719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 952376.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 12380719 is about 3518.6245892394. The cubic root of 12380719 is about 231.3388765754.

The spelling of 12380719 in words is "twelve million, three hundred eighty thousand, seven hundred nineteen".

Divisors: 1 13 952363 12380719