2271778730 has 32 divisors (see below), whose sum is σ = 4406091984. Its totient is φ = 838365696.

The previous prime is 2271778721. The next prime is 2271778777. The reversal of 2271778730 is 378771722.

2271778730 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 17161 + 2271761569 = 131^2 + 47663^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 338972 + ... + 345608.

Almost surely, 2^2271778730 is an apocalyptic number.

2271778730 is a deficient number, since it is larger than the sum of its proper divisors (2134313254).

2271778730 is a wasteful number, since it uses less digits than its factorization.

2271778730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9290.

The product of its (nonzero) digits is 230496, while the sum is 44.

The square root of 2271778730 is about 47663.1800239976. The cubic root of 2271778730 is about 1314.5850117215.

The spelling of 2271778730 in words is "two billion, two hundred seventy-one million, seven hundred seventy-eight thousand, seven hundred thirty".