1089238752 has 144 divisors (see below), whose sum is σ = 3671321472. Its totient is φ = 311195520.

The previous prime is 1089238747. The next prime is 1089238757. The reversal of 1089238752 is 2578329801.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1089238747) and next prime (1089238757).

It is a tau number, because it is divible by the number of its divisors (144).

It is a junction number, because it is equal to n+sod(n) for n = 1089238698 and 1089238707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1089238757) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44427 + ... + 64437.

It is an arithmetic number, because the mean of its divisors is an integer number (25495288).

Almost surely, 2^1089238752 is an apocalyptic number.

1089238752 is a gapful number since it is divisible by the number (12) 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 1089238752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1835660736).

1089238752 is an abundant number, since it is smaller than the sum of its proper divisors (2582082720).

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

1089238752 is an equidigital number, since it uses as much as digits as its factorization.

1089238752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20043 (or 20023 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 1089238752 is about 33003.6172562948. The cubic root of 1089238752 is about 1028.9028289273.

The spelling of 1089238752 in words is "one billion, eighty-nine million, two hundred thirty-eight thousand, seven hundred fifty-two".