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13048144 = 242961461
BaseRepresentation
bin110001110001…
…100101010000
3220112220200121
4301301211100
511320020034
61143400024
7215623144
oct61614520
926486617
1013048144
11740229a
124453014
13291b0c5
141a39224
15122b1b4
hexc71950

13048144 has 40 divisors (see below), whose sum is σ = 26638920. Its totient is φ = 6182400.

The previous prime is 13048141. The next prime is 13048157. The reversal of 13048144 is 44184031.

13048144 = T297 + T298 + ... + T470.

It can be written as a sum of positive squares in 4 ways, for example, as 1600 + 13046544 = 40^2 + 3612^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13048141) 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, 28074 + ... + 28534.

It is an arithmetic number, because the mean of its divisors is an integer number (665973).

Almost surely, 213048144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13048144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13319460).

13048144 is an abundant number, since it is smaller than the sum of its proper divisors (13590776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13048144 is a wasteful number, since it uses less digits than its factorization.

13048144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559 (or 553 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 13048144 is about 3612.2214771523. The cubic root of 13048144 is about 235.4233744123.

The spelling of 13048144 in words is "thirteen million, forty-eight thousand, one hundred forty-four".

Divisors: 1 2 4 8 16 29 58 61 116 122 232 244 461 464 488 922 976 1769 1844 3538 3688 7076 7376 13369 14152 26738 28121 28304 53476 56242 106952 112484 213904 224968 449936 815509 1631018 3262036 6524072 13048144