1228536 has 48 divisors (see below), whose sum is σ = 3378960. Its totient is φ = 403200.

The previous prime is 1228519. The next prime is 1228537. The reversal of 1228536 is 6358221.

1228536 is a `hidden beast` number, since 122 + 8 + 536 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228537) 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 11 ways as a sum of consecutive naturals, for example, 8061 + ... + 8211.

It is an arithmetic number, because the mean of its divisors is an integer number (70395).

2^1228536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1228536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1689480).

1228536 is an abundant number, since it is smaller than the sum of its proper divisors (2150424).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1228536 is a wasteful number, since it uses less digits than its factorization.

1228536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276 (or 269 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 1228536 is about 1108.3934319546. The cubic root of 1228536 is about 107.1016008779.

It can be divided in two parts, 12285 and 36, that added together give a palindrome (12321).

The spelling of 1228536 in words is "one million, two hundred twenty-eight thousand, five hundred thirty-six".