1220244 has 24 divisors (see below), whose sum is σ = 2895648. Its totient is φ = 399840.

The previous prime is 1220239. The next prime is 1220249. The reversal of 1220244 is 4420221.

It is an interprime number because it is at equal distance from previous prime (1220239) and next prime (1220249).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102 + ... + 1565.

It is an arithmetic number, because the mean of its divisors is an integer number (120652).

2^1220244 is an apocalyptic number.

It is an amenable number.

1220244 is an abundant number, since it is smaller than the sum of its proper divisors (1675404).

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

1220244 is a wasteful number, since it uses less digits than its factorization.

1220244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1735 (or 1733 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 1220244 is about 1104.6465498068. The cubic root of 1220244 is about 106.8600960716.

Adding to 1220244 its reverse (4420221), we get a palindrome (5640465).

It can be divided in two parts, 12202 and 44, that added together give a triangular number (12246 = T₁₅₆).

The spelling of 1220244 in words is "one million, two hundred twenty thousand, two hundred forty-four".