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13752438 = 2372291613
BaseRepresentation
bin110100011101…
…100001110110
3221212200210120
4310131201312
512010034223
61210432410
7224615400
oct64354166
927780716
1013752438
117843457
124732706
132b0684b
141b7db70
151319be3
hexd1d876

13752438 has 48 divisors (see below), whose sum is σ = 33119280. Its totient is φ = 3791424.

The previous prime is 13752433. The next prime is 13752451. The reversal of 13752438 is 83425731.

It is a junction number, because it is equal to n+sod(n) for n = 13752399 and 13752408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13752433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7720 + ... + 9332.

It is an arithmetic number, because the mean of its divisors is an integer number (689985).

Almost surely, 213752438 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13752438, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16559640).

13752438 is an abundant number, since it is smaller than the sum of its proper divisors (19366842).

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

13752438 is a wasteful number, since it uses less digits than its factorization.

13752438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1661 (or 1654 counting only the distinct ones).

The product of its digits is 20160, while the sum is 33.

The square root of 13752438 is about 3708.4279688299. The cubic root of 13752438 is about 239.5851513880.

The spelling of 13752438 in words is "thirteen million, seven hundred fifty-two thousand, four hundred thirty-eight".

Divisors: 1 2 3 6 7 14 21 29 42 49 58 87 98 147 174 203 294 406 609 1218 1421 1613 2842 3226 4263 4839 8526 9678 11291 22582 33873 46777 67746 79037 93554 140331 158074 237111 280662 327439 474222 654878 982317 1964634 2292073 4584146 6876219 13752438