1220250 has 32 divisors (see below), whose sum is σ = 3047616. Its totient is φ = 325200.

The previous prime is 1220249. The next prime is 1220251. The reversal of 1220250 is 520221.

It is an interprime number because it is at equal distance from previous prime (1220249) and next prime (1220251).

It is not an unprimeable number, because it can be changed into a prime (1220251) 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 in 15 ways as a sum of consecutive naturals, for example, 64 + ... + 1563.

It is an arithmetic number, because the mean of its divisors is an integer number (95238).

2^1220250 is an apocalyptic number.

1220250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1220250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1523808).

1220250 is an abundant number, since it is smaller than the sum of its proper divisors (1827366).

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

1220250 is a wasteful number, since it uses less digits than its factorization.

1220250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1647 (or 1637 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 12.

The square root of 1220250 is about 1104.6492656042. The cubic root of 1220250 is about 106.8602712167.

Adding to 1220250 its reverse (520221), we get a palindrome (1740471).

The spelling of 1220250 in words is "one million, two hundred twenty thousand, two hundred fifty".