1089864288 has 96 divisors (see below), whose sum is σ = 3365802720. Its totient is φ = 341913600.

The previous prime is 1089864253. The next prime is 1089864319. The reversal of 1089864288 is 8824689801.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22413 + ... + 51788.

It is an arithmetic number, because the mean of its divisors is an integer number (35060445).

Almost surely, 2^1089864288 is an apocalyptic number.

1089864288 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1089864288 is an abundant number, since it is smaller than the sum of its proper divisors (2275938432).

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

1089864288 is a wasteful number, since it uses less digits than its factorization.

1089864288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74237 (or 74223 counting only the distinct ones).

The product of its (nonzero) digits is 1769472, while the sum is 54.

The square root of 1089864288 is about 33013.0926754826. The cubic root of 1089864288 is about 1029.0997531833.

The spelling of 1089864288 in words is "one billion, eighty-nine million, eight hundred sixty-four thousand, two hundred eighty-eight".