2207721834 has 96 divisors (see below), whose sum is σ = 5225875200. Its totient is φ = 671224320.

The previous prime is 2207721829. The next prime is 2207721851. The reversal of 2207721834 is 4381277022.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1106742 + ... + 1108734.

It is an arithmetic number, because the mean of its divisors is an integer number (54436200).

Almost surely, 2^2207721834 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2207721834, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2612937600).

2207721834 is an abundant number, since it is smaller than the sum of its proper divisors (3018153366).

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

2207721834 is a wasteful number, since it uses less digits than its factorization.

2207721834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2140 (or 2137 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The square root of 2207721834 is about 46986.4005218531. The cubic root of 2207721834 is about 1302.1113292927. Note that the first 3 decimals are identical.

Adding to 2207721834 its reverse (4381277022), we get a palindrome (6588998856).

The spelling of 2207721834 in words is "two billion, two hundred seven million, seven hundred twenty-one thousand, eight hundred thirty-four".