2215820826 has 32 divisors (see below), whose sum is σ = 4925793600. Its totient is φ = 738344880.

The previous prime is 2215820819. The next prime is 2215820833. The reversal of 2215820826 is 6280285122.

It is an interprime number because it is at equal distance from previous prime (2215820819) and next prime (2215820833).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 200965 + ... + 211703.

It is an arithmetic number, because the mean of its divisors is an integer number (153931050).

Almost surely, 2^2215820826 is an apocalyptic number.

2215820826 is an abundant number, since it is smaller than the sum of its proper divisors (2709972774).

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

2215820826 is a wasteful number, since it uses less digits than its factorization.

2215820826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14571 (or 14565 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 2215820826 is about 47072.5060518345. The cubic root of 2215820826 is about 1303.7016443419.

The spelling of 2215820826 in words is "two billion, two hundred fifteen million, eight hundred twenty thousand, eight hundred twenty-six".