1344220020 has 144 divisors (see below), whose sum is σ = 4790403072. Its totient is φ = 300798720.

The previous prime is 1344220001. The next prime is 1344220043. The reversal of 1344220020 is 200224431.

1344220020 is a `hidden beast` number, since 1 + 3 + 442 + 200 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1344219975 and 1344220002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 372 + ... + 51851.

It is an arithmetic number, because the mean of its divisors is an integer number (33266688).

Almost surely, 2^1344220020 is an apocalyptic number.

1344220020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1344220020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2395201536).

1344220020 is an abundant number, since it is smaller than the sum of its proper divisors (3446183052).

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

1344220020 is a wasteful number, since it uses less digits than its factorization.

1344220020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52262 (or 52257 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 1344220020 is about 36663.6062056094. The cubic root of 1344220020 is about 1103.6298873556.

Adding to 1344220020 its reverse (200224431), we get a palindrome (1544444451).

The spelling of 1344220020 in words is "one billion, three hundred forty-four million, two hundred twenty thousand, twenty".