4020631266 has 16 divisors (see below), whose sum is σ = 8042220000. Its totient is φ = 1340050848.

The previous prime is 4020631261. The next prime is 4020631289. The reversal of 4020631266 is 6621360204.

It is not an unprimeable number, because it can be changed into a prime (4020631261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22110 + ... + 92358.

It is an arithmetic number, because the mean of its divisors is an integer number (502638750).

Almost surely, 2^4020631266 is an apocalyptic number.

4020631266 is an abundant number, since it is smaller than the sum of its proper divisors (4021588734).

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

4020631266 is a wasteful number, since it uses less digits than its factorization.

4020631266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79793.

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 4020631266 is about 63408.4479071992. The cubic root of 4020631266 is about 1590.1255476197.

The spelling of 4020631266 in words is "four billion, twenty million, six hundred thirty-one thousand, two hundred sixty-six".