2228877778 has 4 divisors (see below), whose sum is σ = 3343316670. Its totient is φ = 1114438888.

The previous prime is 2228877727. The next prime is 2228877823. The reversal of 2228877778 is 8777788222.

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

It can be written as a sum of positive squares in only one way, i.e., 2215867329 + 13010449 = 47073^2 + 3607^2 .

It is a super-2 number, since 2×2228877778² = 9935792298524434568, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 557219443 + ... + 557219446.

Almost surely, 2^2228877778 is an apocalyptic number.

2228877778 is a deficient number, since it is larger than the sum of its proper divisors (1114438892).

2228877778 is a wasteful number, since it uses less digits than its factorization.

2228877778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1114438891.

The product of its digits is 9834496, while the sum is 58.

The square root of 2228877778 is about 47210.9921310705. The cubic root of 2228877778 is about 1306.2573629371.

The spelling of 2228877778 in words is "two billion, two hundred twenty-eight million, eight hundred seventy-seven thousand, seven hundred seventy-eight".