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10388369 = 80912841
BaseRepresentation
bin100111101000…
…001110010001
3201112210011102
4213220032101
510124411434
61010354145
7154204535
oct47501621
921483142
1010388369
115955a32
12358b955
1321c9584
141545bc5
15da307e
hex9e8391

10388369 has 4 divisors (see below), whose sum is σ = 10402020. Its totient is φ = 10374720.

The previous prime is 10388359. The next prime is 10388381. The reversal of 10388369 is 96388301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 96388301 = 127758963.

It can be written as a sum of positive squares in 2 ways, for example, as 7219969 + 3168400 = 2687^2 + 1780^2 .

It is a cyclic number.

It is not a de Polignac number, because 10388369 - 24 = 10388353 is a prime.

It is a super-2 number, since 2×103883692 = 215836420960322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (10388359) 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, 5612 + ... + 7229.

It is an arithmetic number, because the mean of its divisors is an integer number (2600505).

Almost surely, 210388369 is an apocalyptic number.

It is an amenable number.

10388369 is a deficient number, since it is larger than the sum of its proper divisors (13651).

10388369 is an equidigital number, since it uses as much as digits as its factorization.

10388369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13650.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 10388369 is about 3223.0992848499. The cubic root of 10388369 is about 218.1971745242.

The spelling of 10388369 in words is "ten million, three hundred eighty-eight thousand, three hundred sixty-nine".

Divisors: 1 809 12841 10388369