1236136 has 24 divisors (see below), whose sum is σ = 2549610. Its totient is φ = 561440.

The previous prime is 1236077. The next prime is 1236161. The reversal of 1236136 is 6316321.

It can be written as a sum of positive squares in only one way, i.e., 980100 + 256036 = 990^2 + 506^2 .

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 330 + ... + 1606.

2^1236136 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 1236136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1274805).

1236136 is an abundant number, since it is smaller than the sum of its proper divisors (1313474).

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

1236136 is a wasteful number, since it uses less digits than its factorization.

1236136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1305 (or 1290 counting only the distinct ones).

The product of its digits is 648, while the sum is 22.

The square root of 1236136 is about 1111.8165316274. The cubic root of 1236136 is about 107.3219985544.

The spelling of 1236136 in words is "one million, two hundred thirty-six thousand, one hundred thirty-six".