2478222 has 16 divisors (see below), whose sum is σ = 5507280. Its totient is φ = 826056.

The previous prime is 2478221. The next prime is 2478239. The reversal of 2478222 is 2228742.

It is a super-2 number, since 2×2478222² = 12283168562568, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2478221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22893 + ... + 23000.

It is an arithmetic number, because the mean of its divisors is an integer number (344205).

2^2478222 is an apocalyptic number.

2478222 is an abundant number, since it is smaller than the sum of its proper divisors (3029058).

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

2478222 is a wasteful number, since it uses less digits than its factorization.

2478222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45904 (or 45898 counting only the distinct ones).

The product of its digits is 3584, while the sum is 27.

The square root of 2478222 is about 1574.2369580213. The cubic root of 2478222 is about 135.3256336602.

The spelling of 2478222 in words is "two million, four hundred seventy-eight thousand, two hundred twenty-two".