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10981369 = 71568767
BaseRepresentation
bin101001111000…
…111111111001
3202122220121101
4221320333321
510302400434
61031211401
7162224440
oct51707771
922586541
1010981369
116220513
123816b61
132376469
14165bd57
15e6db14
hexa78ff9

10981369 has 4 divisors (see below), whose sum is σ = 12550144. Its totient is φ = 9412596.

The previous prime is 10981361. The next prime is 10981379. The reversal of 10981369 is 96318901.

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.

It is a cyclic number.

It is not a de Polignac number, because 10981369 - 23 = 10981361 is a prime.

It is a super-2 number, since 2×109813692 = 241180930228322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10981361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 784377 + ... + 784390.

It is an arithmetic number, because the mean of its divisors is an integer number (3137536).

Almost surely, 210981369 is an apocalyptic number.

It is an amenable number.

10981369 is a deficient number, since it is larger than the sum of its proper divisors (1568775).

10981369 is an equidigital number, since it uses as much as digits as its factorization.

10981369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1568774.

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 10981369 is about 3313.8148711115. The cubic root of 10981369 is about 222.2723775773.

The spelling of 10981369 in words is "ten million, nine hundred eighty-one thousand, three hundred sixty-nine".

Divisors: 1 7 1568767 10981369