1088783820 has 72 divisors (see below), whose sum is σ = 3306501744. Its totient is φ = 290003328.

The previous prime is 1088783797. The next prime is 1088783863. The reversal of 1088783820 is 283878801.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 176427 + ... + 182493.

Almost surely, 2^1088783820 is an apocalyptic number.

1088783820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1088783820 is an abundant number, since it is smaller than the sum of its proper divisors (2217717924).

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

1088783820 is a wasteful number, since it uses less digits than its factorization.

1088783820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7079 (or 7074 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 45.

The square root of 1088783820 is about 32996.7243828838. The cubic root of 1088783820 is about 1028.7595649575.

The spelling of 1088783820 in words is "one billion, eighty-eight million, seven hundred eighty-three thousand, eight hundred twenty".