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12255823 = 79155137
BaseRepresentation
bin101110110000…
…001001001111
3212001122211101
4232300021033
511114141243
61114403531
7206113156
oct56601117
925048741
1012255823
116a10a88
1241305a7
132701588
1418b059d
15112154d
hexbb024f

12255823 has 4 divisors (see below), whose sum is σ = 12411040. Its totient is φ = 12100608.

The previous prime is 12255821. The next prime is 12255829. The reversal of 12255823 is 32855221.

12255823 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12255823 - 21 = 12255821 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12255791 and 12255800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12255821) 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, 77490 + ... + 77647.

It is an arithmetic number, because the mean of its divisors is an integer number (3102760).

Almost surely, 212255823 is an apocalyptic number.

12255823 is a deficient number, since it is larger than the sum of its proper divisors (155217).

12255823 is an equidigital number, since it uses as much as digits as its factorization.

12255823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155216.

The product of its digits is 4800, while the sum is 28.

The square root of 12255823 is about 3500.8317583112. The cubic root of 12255823 is about 230.5583347632.

It can be divided in two parts, 122 and 55823, that added together give a triangular number (55945 = T334).

The spelling of 12255823 in words is "twelve million, two hundred fifty-five thousand, eight hundred twenty-three".

Divisors: 1 79 155137 12255823