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12238849 = 71748407
BaseRepresentation
bin101110101100…
…000000000001
3212000210112201
4232230000001
511113120344
61114153201
7206012530
oct56540001
925023481
1012238849
1169aa257
124122801
1326c692c
1418a8317
15111b4d4
hexbac001

12238849 has 4 divisors (see below), whose sum is σ = 13987264. Its totient is φ = 10490436.

The previous prime is 12238843. The next prime is 12238859. The reversal of 12238849 is 94883221.

12238849 is digitally balanced in base 3, 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, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 94883221 = 167568163.

It is a cyclic number.

It is not a de Polignac number, because 12238849 - 213 = 12230657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12238843) 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, 874197 + ... + 874210.

It is an arithmetic number, because the mean of its divisors is an integer number (3496816).

It is a Proth number, since it is equal to 747 ⋅ 214 + 1 and 747 < 214.

Almost surely, 212238849 is an apocalyptic number.

It is an amenable number.

12238849 is a deficient number, since it is larger than the sum of its proper divisors (1748415).

12238849 is an equidigital number, since it uses as much as digits as its factorization.

12238849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1748414.

The product of its digits is 27648, while the sum is 37.

The square root of 12238849 is about 3498.4066373136. The cubic root of 12238849 is about 230.4518464634.

The spelling of 12238849 in words is "twelve million, two hundred thirty-eight thousand, eight hundred forty-nine".

Divisors: 1 7 1748407 12238849