2216390402 has 8 divisors (see below), whose sum is σ = 3520149516. Its totient is φ = 1043007232.

The previous prime is 2216390399. The next prime is 2216390443. The reversal of 2216390402 is 2040936122.

It can be written as a sum of positive squares in 2 ways, for example, as 1941195481 + 275194921 = 44059^2 + 16589^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 32593943 + ... + 32594010.

Almost surely, 2^2216390402 is an apocalyptic number.

2216390402 is a deficient number, since it is larger than the sum of its proper divisors (1303759114).

2216390402 is a wasteful number, since it uses less digits than its factorization.

2216390402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65187972.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 2216390402 is about 47078.5556490426. Note that the first 3 decimals coincide. The cubic root of 2216390402 is about 1303.8133401287.

The spelling of 2216390402 in words is "two billion, two hundred sixteen million, three hundred ninety thousand, four hundred two".