2028386 has 4 divisors (see below), whose sum is σ = 3042582. Its totient is φ = 1014192.

The previous prime is 2028373. The next prime is 2028391. The reversal of 2028386 is 6838202.

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

It can be written as a sum of positive squares in only one way, i.e., 1038361 + 990025 = 1019^2 + 995^2 .

It is a super-2 number, since 2×2028386² = 8228699529992, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 507095 + ... + 507098.

2^2028386 is an apocalyptic number.

2028386 is a deficient number, since it is larger than the sum of its proper divisors (1014196).

2028386 is a wasteful number, since it uses less digits than its factorization.

2028386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1014195.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 2028386 is about 1424.2141692878. The cubic root of 2028386 is about 126.5853756649.

The spelling of 2028386 in words is "two million, twenty-eight thousand, three hundred eighty-six".