1081224288 has 120 divisors (see below), whose sum is σ = 3203794440. Its totient is φ = 357696000.

The previous prime is 1081224283. The next prime is 1081224307. The reversal of 1081224288 is 8824221801.

1081224288 is a `hidden beast` number, since 108 + 122 + 428 + 8 = 666.

It is a super-2 number, since 2×1081224288² = 2338091921922213888, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1081224283) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 358788 + ... + 361788.

It is an arithmetic number, because the mean of its divisors is an integer number (26698287).

Almost surely, 2^1081224288 is an apocalyptic number.

1081224288 is a gapful number since it is divisible by the number (18) 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 1081224288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1601897220).

1081224288 is an abundant number, since it is smaller than the sum of its proper divisors (2122570152).

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

1081224288 is a wasteful number, since it uses less digits than its factorization.

1081224288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3162 (or 3145 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 36.

The square root of 1081224288 is about 32881.9751231583. The cubic root of 1081224288 is about 1026.3731073513.

The spelling of 1081224288 in words is "one billion, eighty-one million, two hundred twenty-four thousand, two hundred eighty-eight".