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1302089 = 1968531
BaseRepresentation
bin100111101111001001001
32110011010112
410331321021
5313131324
643524105
714032115
oct4757111
92404115
101302089
1180a308
12529635
13367889
1425c745
151aac0e
hex13de49

1302089 has 4 divisors (see below), whose sum is σ = 1370640. Its totient is φ = 1233540.

The previous prime is 1302079. The next prime is 1302107. The reversal of 1302089 is 9802031.

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 1302089 - 212 = 1297993 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (1302019) 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, 34247 + ... + 34284.

It is an arithmetic number, because the mean of its divisors is an integer number (342660).

21302089 is an apocalyptic number.

1302089 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1302089 is a deficient number, since it is larger than the sum of its proper divisors (68551).

1302089 is an equidigital number, since it uses as much as digits as its factorization.

1302089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68550.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 1302089 is about 1141.0911444753. The cubic root of 1302089 is about 109.1977165011.

The spelling of 1302089 in words is "one million, three hundred two thousand, eighty-nine".

Divisors: 1 19 68531 1302089