2028406 has 8 divisors (see below), whose sum is σ = 3221640. Its totient is φ = 954528.

The previous prime is 2028401. The next prime is 2028413. The reversal of 2028406 is 6048202.

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

It is a super-2 number, since 2×2028406² = 8228861801672, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2028401) 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, 29796 + ... + 29863.

It is an arithmetic number, because the mean of its divisors is an integer number (402705).

2^2028406 is an apocalyptic number.

2028406 is a deficient number, since it is larger than the sum of its proper divisors (1193234).

2028406 is a wasteful number, since it uses less digits than its factorization.

2028406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59678.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 2028406 is about 1424.2211906863. The cubic root of 2028406 is about 126.5857917098.

The spelling of 2028406 in words is "two million, twenty-eight thousand, four hundred six".