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1128229 = 5032243
BaseRepresentation
bin100010011011100100101
32010022122021
410103130211
5242100404
640103141
712406204
oct4233445
92108567
101128229
11700723
12464ab1
133066bb
1421523b
15174454
hex113725

1128229 has 4 divisors (see below), whose sum is σ = 1130976. Its totient is φ = 1125484.

The previous prime is 1128227. The next prime is 1128233. The reversal of 1128229 is 9228211.

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 1128229 - 21 = 1128227 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1128223) 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, 619 + ... + 1624.

It is an arithmetic number, because the mean of its divisors is an integer number (282744).

21128229 is an apocalyptic number.

It is an amenable number.

1128229 is a deficient number, since it is larger than the sum of its proper divisors (2747).

1128229 is an equidigital number, since it uses as much as digits as its factorization.

1128229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2746.

The product of its digits is 576, while the sum is 25.

The square root of 1128229 is about 1062.1812463040. The cubic root of 1128229 is about 104.1036011505.

It can be divided in two parts, 11282 and 29, that added together give a palindrome (11311).

The spelling of 1128229 in words is "one million, one hundred twenty-eight thousand, two hundred twenty-nine".

Divisors: 1 503 2243 1128229