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10605381 = 33535127
BaseRepresentation
bin101000011101…
…001101000101
3201221210211220
4220131031011
510203333011
61015150553
7156100323
oct50351505
921853756
1010605381
115a93a86
123675459
132274297
1415a0d13
15de7506
hexa1d345

10605381 has 4 divisors (see below), whose sum is σ = 14140512. Its totient is φ = 7070252.

The previous prime is 10605377. The next prime is 10605383. The reversal of 10605381 is 18350601.

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: 18350601 = 36116867.

It is a cyclic number.

It is not a de Polignac number, because 10605381 - 22 = 10605377 is a prime.

It is a super-2 number, since 2×106053812 = 224948212310322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10605383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1767561 + ... + 1767566.

It is an arithmetic number, because the mean of its divisors is an integer number (3535128).

Almost surely, 210605381 is an apocalyptic number.

It is an amenable number.

10605381 is a deficient number, since it is larger than the sum of its proper divisors (3535131).

10605381 is an equidigital number, since it uses as much as digits as its factorization.

10605381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3535130.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 10605381 is about 3256.5903948762. The cubic root of 10605381 is about 219.7060882360.

Adding to 10605381 its reverse (18350601), we get a palindrome (28955982).

It can be divided in two parts, 1060 and 5381, that added together give a triangular number (6441 = T113).

The spelling of 10605381 in words is "ten million, six hundred five thousand, three hundred eighty-one".

Divisors: 1 3 3535127 10605381