2287819 has 4 divisors (see below), whose sum is σ = 2336544. Its totient is φ = 2239096.

The previous prime is 2287811. The next prime is 2287823. The reversal of 2287819 is 9187822.

2287819 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2287819 - 2³ = 2287811 is a prime.

It is a super-2 number, since 2×2287819² = 10468231553522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2287811) 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 3 ways as a sum of consecutive naturals, for example, 24292 + ... + 24385.

It is an arithmetic number, because the mean of its divisors is an integer number (584136).

2^2287819 is an apocalyptic number.

2287819 is a deficient number, since it is larger than the sum of its proper divisors (48725).

2287819 is an equidigital number, since it uses as much as digits as its factorization.

2287819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48724.

The product of its digits is 16128, while the sum is 37.

The square root of 2287819 is about 1512.5538006960. The cubic root of 2287819 is about 131.7671706777.

The spelling of 2287819 in words is "two million, two hundred eighty-seven thousand, eight hundred nineteen".