2628221392 has 10 divisors (see below), whose sum is σ = 5092178978. Its totient is φ = 1314110688.

The previous prime is 2628221389. The next prime is 2628221489. The reversal of 2628221392 is 2931228262.

It can be written as a sum of positive squares in only one way, i.e., 1432168336 + 1196053056 = 37844^2 + 34584^2 .

It is a congruent number.

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 as a sum of consecutive naturals, namely, 82131903 + ... + 82131934.

Almost surely, 2^2628221392 is an apocalyptic number.

It is an amenable number.

2628221392 is a deficient number, since it is larger than the sum of its proper divisors (2463957586).

2628221392 is a wasteful number, since it uses less digits than its factorization.

2628221392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164263845 (or 164263839 counting only the distinct ones).

The product of its digits is 41472, while the sum is 37.

The square root of 2628221392 is about 51266.1817575680. The cubic root of 2628221392 is about 1380.0261480728.

It can be divided in two parts, 26282 and 21392, that added together give a palindrome (47674).

The spelling of 2628221392 in words is "two billion, six hundred twenty-eight million, two hundred twenty-one thousand, three hundred ninety-two".