1346820 has 24 divisors (see below), whose sum is σ = 3771264. Its totient is φ = 359136.

The previous prime is 1346773. The next prime is 1346827. The reversal of 1346820 is 286431.

It is a happy number.

It is a super-2 number, since 2×1346820² = 3627848224800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1346827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11164 + ... + 11283.

It is an arithmetic number, because the mean of its divisors is an integer number (157136).

2^1346820 is an apocalyptic number.

1346820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1346820 is an abundant number, since it is smaller than the sum of its proper divisors (2424444).

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

1346820 is a wasteful number, since it uses less digits than its factorization.

1346820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22459 (or 22457 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 1346820 is about 1160.5257429286. The cubic root of 1346820 is about 110.4340973234.

The spelling of 1346820 in words is "one million, three hundred forty-six thousand, eight hundred twenty".