2278797388 has 24 divisors (see below), whose sum is σ = 4562362112. Its totient is φ = 975605904.

The previous prime is 2278797377. The next prime is 2278797413. The reversal of 2278797388 is 8837978722.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15006 + ... + 69157.

Almost surely, 2^2278797388 is an apocalyptic number.

2278797388 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2278797388 is an abundant number, since it is smaller than the sum of its proper divisors (2283564724).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2278797388 is a wasteful number, since it uses less digits than its factorization.

2278797388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85141 (or 85139 counting only the distinct ones).

The product of its digits is 18966528, while the sum is 61.

The square root of 2278797388 is about 47736.7509158300. The cubic root of 2278797388 is about 1315.9374229228.

The spelling of 2278797388 in words is "two billion, two hundred seventy-eight million, seven hundred ninety-seven thousand, three hundred eighty-eight".