1344820 has 24 divisors (see below), whose sum is σ = 2973600. Its totient is φ = 509472.

The previous prime is 1344799. The next prime is 1344821. The reversal of 1344820 is 284431.

It is a junction number, because it is equal to n+sod(n) for n = 1344791 and 1344800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1344821) 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, 1390 + ... + 2149.

It is an arithmetic number, because the mean of its divisors is an integer number (123900).

2^1344820 is an apocalyptic number.

1344820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1344820 is an abundant number, since it is smaller than the sum of its proper divisors (1628780).

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

1344820 is a wasteful number, since it uses less digits than its factorization.

1344820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3567 (or 3565 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 1344820 is about 1159.6637443673. The cubic root of 1344820 is about 110.3794061216.

It can be divided in two parts, 13 and 44820, that multiplied together give a triangular number (582660 = T₁₀₇₉).

The spelling of 1344820 in words is "one million, three hundred forty-four thousand, eight hundred twenty".