2289278 has 8 divisors (see below), whose sum is σ = 3467568. Its totient is φ = 1133424.

The previous prime is 2289263. The next prime is 2289281. The reversal of 2289278 is 8729822.

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

It is a super-2 number, since 2×2289278² = 10481587522568, which contains 22 as substring.

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, 5351 + ... + 5762.

It is an arithmetic number, because the mean of its divisors is an integer number (433446).

2^2289278 is an apocalyptic number.

2289278 is a deficient number, since it is larger than the sum of its proper divisors (1178290).

2289278 is a wasteful number, since it uses less digits than its factorization.

2289278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11218.

The product of its digits is 32256, while the sum is 38.

The square root of 2289278 is about 1513.0360207213. The cubic root of 2289278 is about 131.7951751438.

The spelling of 2289278 in words is "two million, two hundred eighty-nine thousand, two hundred seventy-eight".