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11136889 = 37300997
BaseRepresentation
bin101010011110…
…111101111001
3202221210221101
4222132331321
510322340024
61034411401
7163443031
oct52367571
922853841
1011136889
116317345
123890b61
1323cc19a
14169c8c1
15e9ec44
hexa9ef79

11136889 has 4 divisors (see below), whose sum is σ = 11437924. Its totient is φ = 10835856.

The previous prime is 11136883. The next prime is 11136893. The reversal of 11136889 is 98863111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98863111 = 169958189.

It can be written as a sum of positive squares in 2 ways, for example, as 4272489 + 6864400 = 2067^2 + 2620^2 .

It is a cyclic number.

It is not a de Polignac number, because 11136889 - 211 = 11134841 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 300997 = 11136889 / (1 + 1 + 1 + 3 + 6 + 8 + 8 + 9).

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (11136883) 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, 150462 + ... + 150535.

It is an arithmetic number, because the mean of its divisors is an integer number (2859481).

Almost surely, 211136889 is an apocalyptic number.

It is an amenable number.

11136889 is a deficient number, since it is larger than the sum of its proper divisors (301035).

11136889 is an equidigital number, since it uses as much as digits as its factorization.

11136889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301034.

The product of its digits is 10368, while the sum is 37.

The square root of 11136889 is about 3337.1977765784. The cubic root of 11136889 is about 223.3167490965.

It can be divided in two parts, 11 and 136889, that added together give a square (136900 = 3702).

The spelling of 11136889 in words is "eleven million, one hundred thirty-six thousand, eight hundred eighty-nine".

Divisors: 1 37 300997 11136889