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10144381 = 132812777
BaseRepresentation
bin100110101100…
…101001111101
3201002101110211
4212230221331
510044110011
61001232421
7152140312
oct46545175
921071424
1010144381
1157a9695
123492711
1321424c0
1414c0d09
15d55b21
hex9aca7d

10144381 has 8 divisors (see below), whose sum is σ = 10967544. Its totient is φ = 9327360.

The previous prime is 10144369. The next prime is 10144397. The reversal of 10144381 is 18344101.

It can be written as a sum of positive squares in 4 ways, for example, as 95481 + 10048900 = 309^2 + 3170^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10144381 - 223 = 1755773 is a prime.

It is a super-2 number, since 2×101443812 = 205816931746322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10144301) 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, 2265 + ... + 5041.

It is an arithmetic number, because the mean of its divisors is an integer number (1370943).

Almost surely, 210144381 is an apocalyptic number.

It is an amenable number.

10144381 is a deficient number, since it is larger than the sum of its proper divisors (823163).

10144381 is a wasteful number, since it uses less digits than its factorization.

10144381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3071.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 10144381 is about 3185.0244897018. The cubic root of 10144381 is about 216.4753833127.

Adding to 10144381 its reverse (18344101), we get a palindrome (28488482).

The spelling of 10144381 in words is "ten million, one hundred forty-four thousand, three hundred eighty-one".

Divisors: 1 13 281 2777 3653 36101 780337 10144381