1152784220 has 48 divisors (see below), whose sum is σ = 2862095040. Its totient is φ = 381609984.

The previous prime is 1152784211. The next prime is 1152784231. The reversal of 1152784220 is 224872511.

It is a super-2 number, since 2×1152784220² = 2657822915762016800, which contains 22 as substring.

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, 137909 + ... + 146028.

It is an arithmetic number, because the mean of its divisors is an integer number (59626980).

Almost surely, 2^1152784220 is an apocalyptic number.

1152784220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1152784220 is an abundant number, since it is smaller than the sum of its proper divisors (1709310820).

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

1152784220 is a wasteful number, since it uses less digits than its factorization.

1152784220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283982 (or 283980 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 1152784220 is about 33952.6761831818. The cubic root of 1152784220 is about 1048.5343784737.

The spelling of 1152784220 in words is "one billion, one hundred fifty-two million, seven hundred eighty-four thousand, two hundred twenty".