1623344406 has 16 divisors (see below), whose sum is σ = 3325876848. Its totient is φ = 527916800.

The previous prime is 1623344381. The next prime is 1623344441. The reversal of 1623344406 is 6044433261.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3299235 + ... + 3299726.

It is an arithmetic number, because the mean of its divisors is an integer number (207867303).

Almost surely, 2^1623344406 is an apocalyptic number.

1623344406 is an abundant number, since it is smaller than the sum of its proper divisors (1702532442).

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

1623344406 is a wasteful number, since it uses less digits than its factorization.

1623344406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6599007.

The product of its (nonzero) digits is 41472, while the sum is 33.

The square root of 1623344406 is about 40290.7483921557. The cubic root of 1623344406 is about 1175.2679409477.

Adding to 1623344406 its reverse (6044433261), we get a palindrome (7667777667).

The spelling of 1623344406 in words is "one billion, six hundred twenty-three million, three hundred forty-four thousand, four hundred six".