1623328 has 24 divisors (see below), whose sum is σ = 3652992. Its totient is φ = 695616.

The previous prime is 1623319. The next prime is 1623361. The reversal of 1623328 is 8233261.

It is a super-3 number, since 3×1623328³ = 12833351621393350656, which contains 333 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3400 + ... + 3847.

It is an arithmetic number, because the mean of its divisors is an integer number (152208).

2^1623328 is an apocalyptic number.

It is an amenable number.

1623328 is an abundant number, since it is smaller than the sum of its proper divisors (2029664).

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

1623328 is an equidigital number, since it uses as much as digits as its factorization.

1623328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7264 (or 7256 counting only the distinct ones).

The product of its digits is 1728, while the sum is 25.

The square root of 1623328 is about 1274.0988972603. The cubic root of 1623328 is about 117.5263981732.

Adding to 1623328 its reverse (8233261), we get a palindrome (9856589).

It can be divided in two parts, 16233 and 28, that added together give a palindrome (16261).

The spelling of 1623328 in words is "one million, six hundred twenty-three thousand, three hundred twenty-eight".