4778266 has 8 divisors (see below), whose sum is σ = 7180020. Its totient is φ = 2384928.

The previous prime is 4778237. The next prime is 4778303. The reversal of 4778266 is 6628774.

It can be written as a sum of positive squares in 2 ways, for example, as 4713241 + 65025 = 2171^2 + 255^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 411 + ... + 3118.

Almost surely, 2^4778266 is an apocalyptic number.

4778266 is the 1383-rd centered pentagonal number.

4778266 is a deficient number, since it is larger than the sum of its proper divisors (2401754).

4778266 is a wasteful number, since it uses less digits than its factorization.

4778266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4208.

The product of its digits is 112896, while the sum is 40.

The square root of 4778266 is about 2185.9245183675. The cubic root of 4778266 is about 168.4315483008.

The spelling of 4778266 in words is "four million, seven hundred seventy-eight thousand, two hundred sixty-six".