2278022 has 4 divisors (see below), whose sum is σ = 3417036. Its totient is φ = 1139010.

The previous prime is 2278021. The next prime is 2278027. The reversal of 2278022 is 2208722.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2278021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 569504 + ... + 569507.

It is an arithmetic number, because the mean of its divisors is an integer number (854259).

2^2278022 is an apocalyptic number.

2278022 is a deficient number, since it is larger than the sum of its proper divisors (1139014).

2278022 is a wasteful number, since it uses less digits than its factorization.

2278022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1139013.

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 2278022 is about 1509.3117636857. The cubic root of 2278022 is about 131.5788151521.

Adding to 2278022 its sum of digits (23), we get a triangular number (2278045 = T₂₁₃₄).

The spelling of 2278022 in words is "two million, two hundred seventy-eight thousand, twenty-two".