1320408 has 32 divisors (see below), whose sum is σ = 3668400. Its totient is φ = 440064.

The previous prime is 1320391. The next prime is 1320409. The reversal of 1320408 is 8040231.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320409) 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, 2841 + ... + 3272.

2^1320408 is an apocalyptic number.

1320408 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1320408 is an abundant number, since it is smaller than the sum of its proper divisors (2347992).

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

1320408 is a wasteful number, since it uses less digits than its factorization.

1320408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6128 (or 6118 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1320408 is about 1149.0900747983. The cubic root of 1320408 is about 109.7074319100.

Adding to 1320408 its reverse (8040231), we get a palindrome (9360639).

It can be divided in two parts, 1320 and 408, that added together give a cube (1728 = 12³).

The spelling of 1320408 in words is "one million, three hundred twenty thousand, four hundred eight".