1026444440 has 64 divisors (see below), whose sum is σ = 2665128960. Its totient is φ = 348497280.

The previous prime is 1026444431. The next prime is 1026444451. The reversal of 1026444440 is 444446201.

1026444440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11045 + ... + 46635.

It is an arithmetic number, because the mean of its divisors is an integer number (41642640).

Almost surely, 2^1026444440 is an apocalyptic number.

1026444440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1026444440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1332564480).

1026444440 is an abundant number, since it is smaller than the sum of its proper divisors (1638684520).

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

1026444440 is a wasteful number, since it uses less digits than its factorization.

1026444440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35712 (or 35708 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 29.

The square root of 1026444440 is about 32038.1716082551. The cubic root of 1026444440 is about 1008.7382341889.

The spelling of 1026444440 in words is "one billion, twenty-six million, four hundred forty-four thousand, four hundred forty".