1152052220 has 24 divisors (see below), whose sum is σ = 2639247408. Its totient is φ = 418928000.

The previous prime is 1152052207. The next prime is 1152052247. The reversal of 1152052220 is 222502511.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1152052192 and 1152052201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2618081 + ... + 2618520.

It is an arithmetic number, because the mean of its divisors is an integer number (109968642).

Almost surely, 2^1152052220 is an apocalyptic number.

1152052220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1152052220 is an abundant number, since it is smaller than the sum of its proper divisors (1487195188).

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

1152052220 is a wasteful number, since it uses less digits than its factorization.

1152052220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5236621 (or 5236619 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 1152052220 is about 33941.8947614891. The cubic root of 1152052220 is about 1048.3123971567.

Adding to 1152052220 its reverse (222502511), we get a palindrome (1374554731).

The spelling of 1152052220 in words is "one billion, one hundred fifty-two million, fifty-two thousand, two hundred twenty".