2152434220 has 12 divisors (see below), whose sum is σ = 4520111904. Its totient is φ = 860973680.

The previous prime is 2152434169. The next prime is 2152434223. The reversal of 2152434220 is 224342512.

It is not an unprimeable number, because it can be changed into a prime (2152434223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53810836 + ... + 53810875.

It is an arithmetic number, because the mean of its divisors is an integer number (376675992).

Almost surely, 2^2152434220 is an apocalyptic number.

2152434220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2152434220 is an abundant number, since it is smaller than the sum of its proper divisors (2367677684).

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

2152434220 is a wasteful number, since it uses less digits than its factorization.

2152434220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107621720 (or 107621718 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 2152434220 is about 46394.3339212883. Note that the first 3 decimals coincide. The cubic root of 2152434220 is about 1291.1497911311.

Adding to 2152434220 its reverse (224342512), we get a palindrome (2376776732).

The spelling of 2152434220 in words is "two billion, one hundred fifty-two million, four hundred thirty-four thousand, two hundred twenty".