2228652778 has 24 divisors (see below), whose sum is σ = 3695823684. Its totient is φ = 1007149440.

The previous prime is 2228652763. The next prime is 2228652779. The reversal of 2228652778 is 8772568222.

It can be written as a sum of positive squares in 2 ways, for example, as 2219634769 + 9018009 = 47113^2 + 3003^2 .

It is not an unprimeable number, because it can be changed into a prime (2228652779) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15250 + ... + 68482.

Almost surely, 2^2228652778 is an apocalyptic number.

2228652778 is a deficient number, since it is larger than the sum of its proper divisors (1467170906).

2228652778 is a wasteful number, since it uses less digits than its factorization.

2228652778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53430 (or 53419 counting only the distinct ones).

The product of its digits is 1505280, while the sum is 49.

The square root of 2228652778 is about 47208.6091512978. The cubic root of 2228652778 is about 1306.2134069158.

The spelling of 2228652778 in words is "two billion, two hundred twenty-eight million, six hundred fifty-two thousand, seven hundred seventy-eight".