1248820 has 24 divisors (see below), whose sum is σ = 2777544. Its totient is φ = 470016.

The previous prime is 1248809. The next prime is 1248829. The reversal of 1248820 is 288421.

1248820 is nontrivially palindromic in base 8.

It can be written as a sum of positive squares in 4 ways, for example, as 51984 + 1196836 = 228^2 + 1094^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1248829) 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, 1497 + ... + 2176.

It is an arithmetic number, because the mean of its divisors is an integer number (115731).

2^1248820 is an apocalyptic number.

1248820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1248820 is an abundant number, since it is smaller than the sum of its proper divisors (1528724).

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

1248820 is a wasteful number, since it uses less digits than its factorization.

1248820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3699 (or 3697 counting only the distinct ones).

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

The square root of 1248820 is about 1117.5061521083. The cubic root of 1248820 is about 107.6878273908.

The spelling of 1248820 in words is "one million, two hundred forty-eight thousand, eight hundred twenty".