1128636 has 36 divisors (see below), whose sum is σ = 2889432. Its totient is φ = 371424.

The previous prime is 1128629. The next prime is 1128637. The reversal of 1128636 is 6368211.

1128636 is a `hidden beast` number, since 1 + 1 + 28 + 636 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1128637) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3706 + ... + 3998.

It is an arithmetic number, because the mean of its divisors is an integer number (80262).

2^1128636 is an apocalyptic number.

It is an amenable number.

1128636 is an abundant number, since it is smaller than the sum of its proper divisors (1760796).

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

1128636 is a wasteful number, since it uses less digits than its factorization.

1128636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410 (or 405 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 1128636 is about 1062.3728159173. The cubic root of 1128636 is about 104.1161178386.

It can be divided in two parts, 1128 and 636, that added together give a square (1764 = 42²).

The spelling of 1128636 in words is "one million, one hundred twenty-eight thousand, six hundred thirty-six".