1089527220 has 48 divisors (see below), whose sum is σ = 3389641920. Its totient is φ = 290540448.

The previous prime is 1089527191. The next prime is 1089527237. The reversal of 1089527220 is 227259801.

1089527220 is a `hidden beast` number, since 108 + 9 + 527 + 2 + 20 = 666.

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

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, 1008282 + ... + 1009361.

It is an arithmetic number, because the mean of its divisors is an integer number (70617540).

Almost surely, 2^1089527220 is an apocalyptic number.

1089527220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1089527220 is an abundant number, since it is smaller than the sum of its proper divisors (2300114700).

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

1089527220 is a wasteful number, since it uses less digits than its factorization.

1089527220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2017661 (or 2017653 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 1089527220 is about 33007.9872152181. The cubic root of 1089527220 is about 1028.9936505656.

The spelling of 1089527220 in words is "one billion, eighty-nine million, five hundred twenty-seven thousand, two hundred twenty".