2217346990 has 32 divisors (see below), whose sum is σ = 4012325856. Its totient is φ = 882264960.

The previous prime is 2217346961. The next prime is 2217346991. The reversal of 2217346990 is 996437122.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2217346991) by changing a digit.

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, 2733685 + ... + 2734495.

It is an arithmetic number, because the mean of its divisors is an integer number (125385183).

Almost surely, 2^2217346990 is an apocalyptic number.

2217346990 is a deficient number, since it is larger than the sum of its proper divisors (1794978866).

2217346990 is a wasteful number, since it uses less digits than its factorization.

2217346990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1924.

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 2217346990 is about 47088.7140406276. The cubic root of 2217346990 is about 1304.0008872333. Note that the first 3 decimals are identical.

The spelling of 2217346990 in words is "two billion, two hundred seventeen million, three hundred forty-six thousand, nine hundred ninety".