2128494 has 16 divisors (see below), whose sum is σ = 4481280. Its totient is φ = 672120.

The previous prime is 2128493. The next prime is 2128501. The reversal of 2128494 is 4948212.

2128494 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×2128494³ = 28929341325403133352, which contains 333 as substring.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2128493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9222 + ... + 9449.

It is an arithmetic number, because the mean of its divisors is an integer number (280080).

2^2128494 is an apocalyptic number.

2128494 is an abundant number, since it is smaller than the sum of its proper divisors (2352786).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2128494 is a wasteful number, since it uses less digits than its factorization.

2128494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18695.

The product of its digits is 4608, while the sum is 30.

The square root of 2128494 is about 1458.9359136028. The cubic root of 2128494 is about 128.6345041478.

The spelling of 2128494 in words is "two million, one hundred twenty-eight thousand, four hundred ninety-four".