1088142640 has 160 divisors (see below), whose sum is σ = 2852942400. Its totient is φ = 383201280.

The previous prime is 1088142631. The next prime is 1088142659. The reversal of 1088142640 is 462418801.

It is a junction number, because it is equal to n+sod(n) for n = 1088142596 and 1088142605.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3287275 + ... + 3287605.

It is an arithmetic number, because the mean of its divisors is an integer number (17830890).

Almost surely, 2^1088142640 is an apocalyptic number.

1088142640 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 1088142640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1426471200).

1088142640 is an abundant number, since it is smaller than the sum of its proper divisors (1764799760).

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

1088142640 is a wasteful number, since it uses less digits than its factorization.

1088142640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495 (or 489 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 34.

The square root of 1088142640 is about 32987.0071391753. The cubic root of 1088142640 is about 1028.5575813098.

The spelling of 1088142640 in words is "one billion, eighty-eight million, one hundred forty-two thousand, six hundred forty".