4891266 has 40 divisors (see below), whose sum is σ = 11100540. Its totient is φ = 1609632.

The previous prime is 4891253. The next prime is 4891283. The reversal of 4891266 is 6621984.

It can be written as a sum of positive squares in 2 ways, for example, as 4862025 + 29241 = 2205^2 + 171^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 4891266.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 17520 + ... + 17796.

Almost surely, 2^4891266 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4891266, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5550270).

4891266 is an abundant number, since it is smaller than the sum of its proper divisors (6209274).

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

4891266 is a wasteful number, since it uses less digits than its factorization.

4891266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400 (or 391 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 4891266 is about 2211.6206727194. The cubic root of 4891266 is about 169.7489489301.

The spelling of 4891266 in words is "four million, eight hundred ninety-one thousand, two hundred sixty-six".