1229236 has 12 divisors (see below), whose sum is σ = 2277828. Its totient is φ = 578432.

The previous prime is 1229227. The next prime is 1229237. The reversal of 1229236 is 6329221.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1102500 + 126736 = 1050^2 + 356^2 .

It is a super-2 number, since 2×1229236² = 3022042287392, which contains 22 as substring.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1229236.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1229237) 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, 8971 + ... + 9106.

It is an arithmetic number, because the mean of its divisors is an integer number (189819).

2^1229236 is an apocalyptic number.

It is an amenable number.

1229236 is a deficient number, since it is larger than the sum of its proper divisors (1048592).

1229236 is a wasteful number, since it uses less digits than its factorization.

1229236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18098 (or 18096 counting only the distinct ones).

The product of its digits is 1296, while the sum is 25.

The square root of 1229236 is about 1108.7091593380. The cubic root of 1229236 is about 107.1219386040.

The spelling of 1229236 in words is "one million, two hundred twenty-nine thousand, two hundred thirty-six".