1088317440 has 432 divisors, whose sum is σ = 4405941540. Its totient is φ = 247726080.

The previous prime is 1088317429. The next prime is 1088317469. The reversal of 1088317440 is 447138801.

It can be written as a sum of positive squares in 2 ways, for example, as 1084253184 + 4064256 = 32928^2 + 2016^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1088317395 and 1088317404.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 4515720 + ... + 4515960.

Almost surely, 2^1088317440 is an apocalyptic number.

1088317440 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 1088317440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2202970770).

1088317440 is an abundant number, since it is smaller than the sum of its proper divisors (3317624100).

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

1088317440 is a wasteful number, since it uses less digits than its factorization.

1088317440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288 (or 258 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 1088317440 is about 32989.6565608071. The cubic root of 1088317440 is about 1028.6126544323.

The spelling of 1088317440 in words is "one billion, eighty-eight million, three hundred seventeen thousand, four hundred forty".