2279205128 has 12 divisors (see below), whose sum is σ = 4273762815. Its totient is φ = 1139535048.

The previous prime is 2279205109. The next prime is 2279205133. The reversal of 2279205128 is 8215029722.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 1139602564 + 1139602564 = 33758^2 + 33758^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=33758.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2279205091 and 2279205100.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 126593 + ... + 143471.

Almost surely, 2^2279205128 is an apocalyptic number.

It is an amenable number.

2279205128 is a deficient number, since it is larger than the sum of its proper divisors (1994557687).

2279205128 is an frugal number, since it uses more digits than its factorization.

2279205128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33764 (or 16881 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 2279205128 is about 47741.0214385909. The cubic root of 2279205128 is about 1316.0159041324.

The spelling of 2279205128 in words is "two billion, two hundred seventy-nine million, two hundred five thousand, one hundred twenty-eight".