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10538689 = 72416247
BaseRepresentation
bin101000001100…
…111011000001
3201211102100211
4220030323001
510144214224
61013514121
7155402020
oct50147301
921742324
1010538689
115a48967
123642941
13224cb15
1415848b7
15dd2894
hexa0cec1

10538689 has 8 divisors (see below), whose sum is σ = 12096128. Its totient is φ = 8994240.

The previous prime is 10538683. The next prime is 10538699. The reversal of 10538689 is 98683501.

It is a happy number.

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 10538689 - 215 = 10505921 is a prime.

It is a super-2 number, since 2×105386892 = 222127931677442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10538683) 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, 1437 + ... + 4810.

It is an arithmetic number, because the mean of its divisors is an integer number (1512016).

Almost surely, 210538689 is an apocalyptic number.

It is an amenable number.

10538689 is a deficient number, since it is larger than the sum of its proper divisors (1557439).

10538689 is an equidigital number, since it uses as much as digits as its factorization.

10538689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6495.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 10538689 is about 3246.3347023990. The cubic root of 10538689 is about 219.2445784737.

The spelling of 10538689 in words is "ten million, five hundred thirty-eight thousand, six hundred eighty-nine".

Divisors: 1 7 241 1687 6247 43729 1505527 10538689