2229778 has 8 divisors (see below), whose sum is σ = 3356172. Its totient is φ = 1111056.

The previous prime is 2229769. The next prime is 2229779. The reversal of 2229778 is 8779222.

It can be written as a sum of positive squares in 2 ways, for example, as 2229049 + 729 = 1493^2 + 27^2 .

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

It is not an unprimeable number, because it can be changed into a prime (2229779) 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, 1125 + ... + 2392.

2^2229778 is an apocalyptic number.

2229778 is a deficient number, since it is larger than the sum of its proper divisors (1126394).

2229778 is a wasteful number, since it uses less digits than its factorization.

2229778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3836.

The product of its digits is 28224, while the sum is 37.

The square root of 2229778 is about 1493.2441193589. The cubic root of 2229778 is about 130.6433200803.

It can be divided in two parts, 222 and 9778, that added together give a 4-th power (10000 = 10⁴).

The spelling of 2229778 in words is "two million, two hundred twenty-nine thousand, seven hundred seventy-eight".