2211839728 has 40 divisors (see below), whose sum is σ = 4905444960. Its totient is φ = 946421760.

The previous prime is 2211839717. The next prime is 2211839741. The reversal of 2211839728 is 8279381122.

It is a super-2 number, since 2×2211839728² = 9784469964718227968, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56388 + ... + 87196.

It is an arithmetic number, because the mean of its divisors is an integer number (122636124).

Almost surely, 2^2211839728 is an apocalyptic number.

2211839728 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2211839728 is an abundant number, since it is smaller than the sum of its proper divisors (2693605232).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2211839728 is a wasteful number, since it uses less digits than its factorization.

2211839728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31465 (or 31459 counting only the distinct ones).

The product of its digits is 96768, while the sum is 43.

The square root of 2211839728 is about 47030.2001696782. The cubic root of 2211839728 is about 1302.9204025569.

The spelling of 2211839728 in words is "two billion, two hundred eleven million, eight hundred thirty-nine thousand, seven hundred twenty-eight".