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12388413 = 36016871
BaseRepresentation
bin101111010000…
…100000111101
3212022101201010
4233100200331
511132412123
61121305433
7210204552
oct57204075
925271633
1012388413
116aa1664
124195279
132749a2b
141906a29
15114a993
hexbd083d

12388413 has 8 divisors (see below), whose sum is σ = 16547776. Its totient is φ = 8244000.

The previous prime is 12388403. The next prime is 12388417. The reversal of 12388413 is 31488321.

12388413 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 12388413 - 25 = 12388381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12388417) 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, 1633 + ... + 5238.

It is an arithmetic number, because the mean of its divisors is an integer number (2068472).

Almost surely, 212388413 is an apocalyptic number.

It is an amenable number.

12388413 is a deficient number, since it is larger than the sum of its proper divisors (4159363).

12388413 is an equidigital number, since it uses as much as digits as its factorization.

12388413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7475.

The product of its digits is 4608, while the sum is 30.

The square root of 12388413 is about 3519.7177443653. The cubic root of 12388413 is about 231.3867885136.

The spelling of 12388413 in words is "twelve million, three hundred eighty-eight thousand, four hundred thirteen".

Divisors: 1 3 601 1803 6871 20613 4129471 12388413