2179681228 has 24 divisors (see below), whose sum is σ = 3863059200. Its totient is φ = 1076034960.

The previous prime is 2179681201. The next prime is 2179681241. The reversal of 2179681228 is 8221869712.

2179681228 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 93825 + ... + 114727.

It is an arithmetic number, because the mean of its divisors is an integer number (160960800).

Almost surely, 2^2179681228 is an apocalyptic number.

It is an amenable number.

2179681228 is a deficient number, since it is larger than the sum of its proper divisors (1683377972).

2179681228 is a wasteful number, since it uses less digits than its factorization.

2179681228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21237 (or 21235 counting only the distinct ones).

The product of its digits is 193536, while the sum is 46.

The square root of 2179681228 is about 46687.0563218543. The cubic root of 2179681228 is about 1296.5750532863.

The spelling of 2179681228 in words is "two billion, one hundred seventy-nine million, six hundred eighty-one thousand, two hundred twenty-eight".