7890222 has 8 divisors (see below), whose sum is σ = 15780456. Its totient is φ = 2630072.

The previous prime is 7890217. The next prime is 7890251. The reversal of 7890222 is 2220987.

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

7890222 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 7890222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 657513 + ... + 657524.

It is an arithmetic number, because the mean of its divisors is an integer number (1972557).

Almost surely, 2^7890222 is an apocalyptic number.

7890222 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

7890222 is a wasteful number, since it uses less digits than its factorization.

7890222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1315042.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 7890222 is about 2808.9538978061. The cubic root of 7890222 is about 199.0809666908.

The spelling of 7890222 in words is "seven million, eight hundred ninety thousand, two hundred twenty-two".