1236628 has 6 divisors (see below), whose sum is σ = 2164106. Its totient is φ = 618312.

The previous prime is 1236623. The next prime is 1236629. The reversal of 1236628 is 8266321.

It can be written as a sum of positive squares in only one way, i.e., 824464 + 412164 = 908^2 + 642^2 .

It is a super-3 number, since 3×1236628³ = 5673335693662635456, which contains 333 as substring.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1236596 and 1236605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1236623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 154575 + ... + 154582.

2^1236628 is an apocalyptic number.

It is an amenable number.

1236628 is a deficient number, since it is larger than the sum of its proper divisors (927478).

1236628 is a wasteful number, since it uses less digits than its factorization.

1236628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309161 (or 309159 counting only the distinct ones).

The product of its digits is 3456, while the sum is 28.

The square root of 1236628 is about 1112.0377691428. The cubic root of 1236628 is about 107.3362352348.

The spelling of 1236628 in words is "one million, two hundred thirty-six thousand, six hundred twenty-eight".