2287491 has 8 divisors (see below), whose sum is σ = 3155280. Its totient is φ = 1472352.

The previous prime is 2287487. The next prime is 2287501. The reversal of 2287491 is 1947822.

It is a happy number.

2287491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

2287491 is an esthetic number in base 6, because in such base its adjacent digits differ by 1.

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

It is not a de Polignac number, because 2287491 - 2² = 2287487 is a prime.

It is a d-powerful number, because it can be written as 2¹⁵ + 2¹⁹ + 8⁵ + 7⁶ + 4¹⁰ + 9⁶ + 1 .

It is not an unprimeable number, because it can be changed into a prime (2287421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13060 + ... + 13233.

It is an arithmetic number, because the mean of its divisors is an integer number (394410).

2^2287491 is an apocalyptic number.

2287491 is a deficient number, since it is larger than the sum of its proper divisors (867789).

2287491 is a wasteful number, since it uses less digits than its factorization.

2287491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26325.

The product of its digits is 8064, while the sum is 33.

The square root of 2287491 is about 1512.4453709143. The cubic root of 2287491 is about 131.7608733121.

The spelling of 2287491 in words is "two million, two hundred eighty-seven thousand, four hundred ninety-one".