1088388820 has 24 divisors (see below), whose sum is σ = 2317811328. Its totient is φ = 429223200.

The previous prime is 1088388817. The next prime is 1088388839. The reversal of 1088388820 is 288838801.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 381816 + ... + 384655.

It is an arithmetic number, because the mean of its divisors is an integer number (96575472).

Almost surely, 2^1088388820 is an apocalyptic number.

1088388820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1088388820 is an abundant number, since it is smaller than the sum of its proper divisors (1229422508).

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

1088388820 is a wasteful number, since it uses less digits than its factorization.

1088388820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766551 (or 766549 counting only the distinct ones).

The product of its (nonzero) digits is 196608, while the sum is 46.

The square root of 1088388820 is about 32990.7383973139. The cubic root of 1088388820 is about 1028.6351419785.

The spelling of 1088388820 in words is "one billion, eighty-eight million, three hundred eighty-eight thousand, eight hundred twenty".