2028398 has 4 divisors (see below), whose sum is σ = 3042600. Its totient is φ = 1014198.

The previous prime is 2028391. The next prime is 2028401. The reversal of 2028398 is 8938202.

It is a happy number.

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

It is a super-2 number, since 2×2028398² = 8228796892808, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2028391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 507098 + ... + 507101.

It is an arithmetic number, because the mean of its divisors is an integer number (760650).

2^2028398 is an apocalyptic number.

2028398 is a deficient number, since it is larger than the sum of its proper divisors (1014202).

2028398 is a wasteful number, since it uses less digits than its factorization.

2028398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1014201.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 2028398 is about 1424.2183821311. The cubic root of 2028398 is about 126.5856252922.

The spelling of 2028398 in words is "two million, twenty-eight thousand, three hundred ninety-eight".