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10697389 = 28138069
BaseRepresentation
bin101000110011…
…101010101101
3202010111001121
4220303222231
510214304024
61021140541
7156632503
oct50635255
922114047
1010697389
11604711a
1236ba751
1322a7121
1415c6673
15e148e4
hexa33aad

10697389 has 4 divisors (see below), whose sum is σ = 10735740. Its totient is φ = 10659040.

The previous prime is 10697383. The next prime is 10697413. The reversal of 10697389 is 98379601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98379601 = 472093183.

It can be written as a sum of positive squares in 2 ways, for example, as 7022500 + 3674889 = 2650^2 + 1917^2 .

It is a cyclic number.

It is not a de Polignac number, because 10697389 - 23 = 10697381 is a prime.

It is a super-2 number, since 2×106973892 = 228868262834642, 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 (10697381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18754 + ... + 19315.

It is an arithmetic number, because the mean of its divisors is an integer number (2683935).

Almost surely, 210697389 is an apocalyptic number.

It is an amenable number.

10697389 is a deficient number, since it is larger than the sum of its proper divisors (38351).

10697389 is an equidigital number, since it uses as much as digits as its factorization.

10697389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38350.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 10697389 is about 3270.6863194137. The cubic root of 10697389 is about 220.3396200774.

The spelling of 10697389 in words is "ten million, six hundred ninety-seven thousand, three hundred eighty-nine".

Divisors: 1 281 38069 10697389