2800491 has 4 divisors (see below), whose sum is σ = 3733992. Its totient is φ = 1866992.

The previous prime is 2800489. The next prime is 2800507. The reversal of 2800491 is 1940082.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2800491 - 2¹ = 2800489 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (2800451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 466746 + ... + 466751.

It is an arithmetic number, because the mean of its divisors is an integer number (933498).

2^2800491 is an apocalyptic number.

2800491 is a deficient number, since it is larger than the sum of its proper divisors (933501).

2800491 is an equidigital number, since it uses as much as digits as its factorization.

2800491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 933500.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 2800491 is about 1673.4667609487. The cubic root of 2800491 is about 140.9542127876.

The spelling of 2800491 in words is "two million, eight hundred thousand, four hundred ninety-one".