7900222 has 8 divisors (see below), whose sum is σ = 12927672. Its totient is φ = 3591000.

The previous prime is 7900213. The next prime is 7900229. The reversal of 7900222 is 2220097.

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

It is a Harshad number since it is a multiple of its sum of digits (22), and also a Moran number because the ratio is a prime number: 359101 = 7900222 / (7 + 9 + 0 + 0 + 2 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 7900193 and 7900202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7900229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 179529 + ... + 179572.

It is an arithmetic number, because the mean of its divisors is an integer number (1615959).

Almost surely, 2^7900222 is an apocalyptic number.

7900222 is a deficient number, since it is larger than the sum of its proper divisors (5027450).

7900222 is a wasteful number, since it uses less digits than its factorization.

7900222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359114.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 7900222 is about 2810.7333562613. The cubic root of 7900222 is about 199.1650356906.

The spelling of 7900222 in words is "seven million, nine hundred thousand, two hundred twenty-two".