2028278 has 16 divisors (see below), whose sum is σ = 3628800. Its totient is φ = 831336.

The previous prime is 2028277. The next prime is 2028281. The reversal of 2028278 is 8728202.

It is a super-2 number, since 2×2028278² = 8227823290568, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2028278.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2028277) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2828 + ... + 3471.

It is an arithmetic number, because the mean of its divisors is an integer number (226800).

2^2028278 is an apocalyptic number.

2028278 is a deficient number, since it is larger than the sum of its proper divisors (1600522).

2028278 is a wasteful number, since it uses less digits than its factorization.

2028278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6331.

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 2028278 is about 1424.1762531372. The cubic root of 2028278 is about 126.5831289750.

The spelling of 2028278 in words is "two million, twenty-eight thousand, two hundred seventy-eight".