2028387 has 4 divisors (see below), whose sum is σ = 2704520. Its totient is φ = 1352256.

The previous prime is 2028373. The next prime is 2028391. The reversal of 2028387 is 7838202.

2028387 is nontrivially palindromic in base 9.

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

It is not a de Polignac number, because 2028387 - 2⁴ = 2028371 is a prime.

It is a super-2 number, since 2×2028387² = 8228707643538, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2028487) 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, 338062 + ... + 338067.

It is an arithmetic number, because the mean of its divisors is an integer number (676130).

2^2028387 is an apocalyptic number.

2028387 is a deficient number, since it is larger than the sum of its proper divisors (676133).

2028387 is an equidigital number, since it uses as much as digits as its factorization.

2028387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676132.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 2028387 is about 1424.2145203585. The cubic root of 2028387 is about 126.5853964672.

It can be divided in two parts, 2028 and 387, that added together give a triangular number (2415 = T₆₉).

The spelling of 2028387 in words is "two million, twenty-eight thousand, three hundred eighty-seven".