2128817224 has 8 divisors (see below), whose sum is σ = 3991532310. Its totient is φ = 1064408608.

The previous prime is 2128817183. The next prime is 2128817269. The reversal of 2128817224 is 4227188212.

It can be written as a sum of positive squares in only one way, i.e., 1354976100 + 773841124 = 36810^2 + 27818^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133051069 + ... + 133051084.

Almost surely, 2^2128817224 is an apocalyptic number.

It is an amenable number.

2128817224 is a deficient number, since it is larger than the sum of its proper divisors (1862715086).

2128817224 is a wasteful number, since it uses less digits than its factorization.

2128817224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266102159 (or 266102155 counting only the distinct ones).

The product of its digits is 28672, while the sum is 37.

The square root of 2128817224 is about 46139.1073168955. The cubic root of 2128817224 is about 1286.4101511357.

The spelling of 2128817224 in words is "two billion, one hundred twenty-eight million, eight hundred seventeen thousand, two hundred twenty-four".