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1538141 = 11139831
BaseRepresentation
bin101110111100001011101
32220010221012
411313201131
5343210031
652545005
716034243
oct5674135
92803835
101538141
119606a0
12622165
1341b157
142c0793
15205b2b
hex17785d

1538141 has 4 divisors (see below), whose sum is σ = 1677984. Its totient is φ = 1398300.

The previous prime is 1538111. The next prime is 1538167. The reversal of 1538141 is 1418351.

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: 1418351 = 11128941.

It is a cyclic number.

It is not a de Polignac number, because 1538141 - 26 = 1538077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1538101) 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 3 ways as a sum of consecutive naturals, for example, 69905 + ... + 69926.

It is an arithmetic number, because the mean of its divisors is an integer number (419496).

21538141 is an apocalyptic number.

1538141 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1538141 is a deficient number, since it is larger than the sum of its proper divisors (139843).

1538141 is a wasteful number, since it uses less digits than its factorization.

1538141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139842.

The product of its digits is 480, while the sum is 23.

The square root of 1538141 is about 1240.2181259762. The cubic root of 1538141 is about 115.4335493527.

The spelling of 1538141 in words is "one million, five hundred thirty-eight thousand, one hundred forty-one".

Divisors: 1 11 139831 1538141