2208181628 has 12 divisors (see below), whose sum is σ = 3866182320. Its totient is φ = 1103558112.

The previous prime is 2208181531. The next prime is 2208181667. The reversal of 2208181628 is 8261818022.

It is a super-2 number, since 2×2208181628² = 9752132204473460768, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2208181591 and 2208181600.

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 in 3 ways as a sum of consecutive naturals, for example, 123776 + ... + 140487.

It is an arithmetic number, because the mean of its divisors is an integer number (322181860).

Almost surely, 2^2208181628 is an apocalyptic number.

It is an amenable number.

2208181628 is a deficient number, since it is larger than the sum of its proper divisors (1658000692).

2208181628 is a wasteful number, since it uses less digits than its factorization.

2208181628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266356 (or 266354 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 38.

The square root of 2208181628 is about 46991.2931084047. The cubic root of 2208181628 is about 1302.2017183095.

The spelling of 2208181628 in words is "two billion, two hundred eight million, one hundred eighty-one thousand, six hundred twenty-eight".