4000266 has 24 divisors (see below), whose sum is σ = 8989344. Its totient is φ = 1333260.

The previous prime is 4000261. The next prime is 4000267. The reversal of 4000266 is 6620004.

4000266 is a `hidden beast` number, since 400 + 0 + 266 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4000261) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3630 + ... + 4601.

It is an arithmetic number, because the mean of its divisors is an integer number (374556).

Almost surely, 2^4000266 is an apocalyptic number.

4000266 is an abundant number, since it is smaller than the sum of its proper divisors (4989078).

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

4000266 is an equidigital number, since it uses as much as digits as its factorization.

4000266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8248 (or 8236 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 4000266 is about 2000.0664988945. The cubic root of 4000266 is about 158.7436238578.

The spelling of 4000266 in words is "four million, two hundred sixty-six", and thus it is an aban number.