1220236 has 12 divisors (see below), whose sum is σ = 2145528. Its totient is φ = 607232.

The previous prime is 1220203. The next prime is 1220239. The reversal of 1220236 is 6320221.

It is not an unprimeable number, because it can be changed into a prime (1220239) 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, 435 + ... + 1621.

It is an arithmetic number, because the mean of its divisors is an integer number (178794).

2^1220236 is an apocalyptic number.

It is an amenable number.

1220236 is a deficient number, since it is larger than the sum of its proper divisors (925292).

1220236 is a wasteful number, since it uses less digits than its factorization.

1220236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1448 (or 1446 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1220236 is about 1104.6429287331. The cubic root of 1220236 is about 106.8598625438.

Adding to 1220236 its reverse (6320221), we get a palindrome (7540457).

The spelling of 1220236 in words is "one million, two hundred twenty thousand, two hundred thirty-six".