1152242220 has 96 divisors (see below), whose sum is σ = 3283241472. Its totient is φ = 301874688.

The previous prime is 1152242219. The next prime is 1152242227. The reversal of 1152242220 is 222422511.

It is not an unprimeable number, because it can be changed into a prime (1152242227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2202879 + ... + 2203401.

It is an arithmetic number, because the mean of its divisors is an integer number (34200432).

Almost surely, 2^1152242220 is an apocalyptic number.

1152242220 is a gapful number since it is divisible by the number (10) 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 1152242220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1641620736).

1152242220 is an abundant number, since it is smaller than the sum of its proper divisors (2130999252).

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

1152242220 is a wasteful number, since it uses less digits than its factorization.

1152242220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111 (or 1109 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 1152242220 is about 33944.6935470038. The cubic root of 1152242220 is about 1048.3700242918.

Adding to 1152242220 its reverse (222422511), we get a palindrome (1374664731).

The spelling of 1152242220 in words is "one billion, one hundred fifty-two million, two hundred forty-two thousand, two hundred twenty".