1024639044 has 96 divisors (see below), whose sum is σ = 2818185216. Its totient is φ = 285655680.

The previous prime is 1024639043. The next prime is 1024639061. The reversal of 1024639044 is 4409364201.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 1024638996 and 1024639014.

It is not an unprimeable number, because it can be changed into a prime (1024639043) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 628959 + ... + 630585.

It is an arithmetic number, because the mean of its divisors is an integer number (29356096).

Almost surely, 2^1024639044 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1024639044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1409092608).

1024639044 is an abundant number, since it is smaller than the sum of its proper divisors (1793546172).

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

1024639044 is a wasteful number, since it uses less digits than its factorization.

1024639044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2025 (or 2023 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 1024639044 is about 32009.9835051504. The cubic root of 1024639044 is about 1008.1464694882.

The spelling of 1024639044 in words is "one billion, twenty-four million, six hundred thirty-nine thousand, forty-four".