2212278 has 48 divisors (see below), whose sum is σ = 5016816. Its totient is φ = 647680.

The previous prime is 2212277. The next prime is 2212297. The reversal of 2212278 is 8722122.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2212271) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53938 + ... + 53978.

It is an arithmetic number, because the mean of its divisors is an integer number (104517).

2^2212278 is an apocalyptic number.

2212278 is an abundant number, since it is smaller than the sum of its proper divisors (2804538).

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

2212278 is a wasteful number, since it uses less digits than its factorization.

2212278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109 (or 86 counting only the distinct ones).

The product of its digits is 896, while the sum is 24.

The square root of 2212278 is about 1487.3728517087. The cubic root of 2212278 is about 130.3006453972.

The spelling of 2212278 in words is "two million, two hundred twelve thousand, two hundred seventy-eight".