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12070387 = 71978753
BaseRepresentation
bin101110000010…
…110111110011
3211201020110101
4232002313303
511042223022
61110413231
7204411430
oct56026763
924636411
1012070387
1168a472a
124061217
132668054
141862b87
1510d6627
hexb82df3

12070387 has 8 divisors (see below), whose sum is σ = 13866336. Its totient is φ = 10292352.

The previous prime is 12070337. The next prime is 12070393. The reversal of 12070387 is 78307021.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12070387 - 211 = 12068339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12070327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2998 + ... + 5755.

It is an arithmetic number, because the mean of its divisors is an integer number (1733292).

Almost surely, 212070387 is an apocalyptic number.

12070387 is a deficient number, since it is larger than the sum of its proper divisors (1795949).

12070387 is an equidigital number, since it uses as much as digits as its factorization.

12070387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8957.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 12070387 is about 3474.2462491884. The cubic root of 12070387 is about 229.3896039377.

It can be divided in two parts, 120 and 70387, that added together give a palindrome (70507).

The spelling of 12070387 in words is "twelve million, seventy thousand, three hundred eighty-seven".

Divisors: 1 7 197 1379 8753 61271 1724341 12070387