2115534220 has 24 divisors (see below), whose sum is σ = 4526447184. Its totient is φ = 830246976.

The previous prime is 2115534199. The next prime is 2115534263. The reversal of 2115534220 is 224355112.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 996834 + ... + 998953.

It is an arithmetic number, because the mean of its divisors is an integer number (188601966).

Almost surely, 2^2115534220 is an apocalyptic number.

2115534220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2115534220 is an abundant number, since it is smaller than the sum of its proper divisors (2410912964).

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

2115534220 is a wasteful number, since it uses less digits than its factorization.

2115534220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1995849 (or 1995847 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 2115534220 is about 45994.9368952714. The cubic root of 2115534220 is about 1283.7289980690.

Adding to 2115534220 its reverse (224355112), we get a palindrome (2339889332).

The spelling of 2115534220 in words is "two billion, one hundred fifteen million, five hundred thirty-four thousand, two hundred twenty".