2028490 has 16 divisors (see below), whose sum is σ = 3686760. Its totient is φ = 803520.

The previous prime is 2028487. The next prime is 2028493. The reversal of 2028490 is 948202.

It is an interprime number because it is at equal distance from previous prime (2028487) and next prime (2028493).

It can be written as a sum of positive squares in 4 ways, for example, as 1108809 + 919681 = 1053^2 + 959^2 .

It is a super-2 number, since 2×2028490² = 8229543360200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2028493) 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, 160 + ... + 2020.

2^2028490 is an apocalyptic number.

2028490 is a deficient number, since it is larger than the sum of its proper divisors (1658270).

2028490 is a wasteful number, since it uses less digits than its factorization.

2028490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1977.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 2028490 is about 1424.2506801824. The cubic root of 2028490 is about 126.5875390687.

The spelling of 2028490 in words is "two million, twenty-eight thousand, four hundred ninety".