1023320444 has 24 divisors (see below), whose sum is σ = 1818337248. Its totient is φ = 503814080.

The previous prime is 1023320443. The next prime is 1023320461. The reversal of 1023320444 is 4440233201.

It is a super-2 number, since 2×1023320444² = 2094369462216714272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023320443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 285914 + ... + 289470.

It is an arithmetic number, because the mean of its divisors is an integer number (75764052).

Almost surely, 2^1023320444 is an apocalyptic number.

It is an amenable number.

1023320444 is a deficient number, since it is larger than the sum of its proper divisors (795016804).

1023320444 is a wasteful number, since it uses less digits than its factorization.

1023320444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4645 (or 4643 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 1023320444 is about 31989.3801753019. The cubic root of 1023320444 is about 1007.7138252347.

Adding to 1023320444 its reverse (4440233201), we get a palindrome (5463553645).

The spelling of 1023320444 in words is "one billion, twenty-three million, three hundred twenty thousand, four hundred forty-four".