1220488 has 24 divisors (see below), whose sum is σ = 2383290. Its totient is φ = 585600.

The previous prime is 1220437. The next prime is 1220489. The reversal of 1220488 is 8840221.

It can be written as a sum of positive squares in 3 ways, for example, as 101124 + 1119364 = 318^2 + 1058^2 .

It is a Smith number, since the sum of its digits (25) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1220489) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19978 + ... + 20038.

2^1220488 is an apocalyptic number.

It is an amenable number.

1220488 is a deficient number, since it is larger than the sum of its proper divisors (1162802).

1220488 is an equidigital number, since it uses as much as digits as its factorization.

1220488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169 (or 104 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 25.

The square root of 1220488 is about 1104.7569868528. The cubic root of 1220488 is about 106.8672181788.

The spelling of 1220488 in words is "one million, two hundred twenty thousand, four hundred eighty-eight".