1026466640 has 80 divisors (see below), whose sum is σ = 2525880000. Its totient is φ = 386850816.

The previous prime is 1026466633. The next prime is 1026466643. The reversal of 1026466640 is 466646201.

1026466640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 1026466640.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1026466643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 291611 + ... + 295109.

It is an arithmetic number, because the mean of its divisors is an integer number (31573500).

Almost surely, 2^1026466640 is an apocalyptic number.

1026466640 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 1026466640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1262940000).

1026466640 is an abundant number, since it is smaller than the sum of its proper divisors (1499413360).

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

1026466640 is a wasteful number, since it uses less digits than its factorization.

1026466640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3724 (or 3718 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 35.

The square root of 1026466640 is about 32038.5180681005. The cubic root of 1026466640 is about 1008.7455064862.

The spelling of 1026466640 in words is "one billion, twenty-six million, four hundred sixty-six thousand, six hundred forty".