2772748386 has 12 divisors (see below), whose sum is σ = 6007621542. Its totient is φ = 924249456.

The previous prime is 2772748379. The next prime is 2772748387. The reversal of 2772748386 is 6838472772.

It can be written as a sum of positive squares in only one way, i.e., 2056169025 + 716579361 = 45345^2 + 26769^2 .

It is a super-2 number, since 2×2772748386² = 15376267224131209992, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2772748387) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 77020771 + ... + 77020806.

Almost surely, 2^2772748386 is an apocalyptic number.

2772748386 is an abundant number, since it is smaller than the sum of its proper divisors (3234873156).

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

2772748386 is a wasteful number, since it uses less digits than its factorization.

2772748386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154041585 (or 154041582 counting only the distinct ones).

The product of its digits is 6322176, while the sum is 54.

The square root of 2772748386 is about 52656.8930530467. The cubic root of 2772748386 is about 1404.8722056315.

The spelling of 2772748386 in words is "two billion, seven hundred seventy-two million, seven hundred forty-eight thousand, three hundred eighty-six".