2020428 has 18 divisors (see below), whose sum is σ = 5107284. Its totient is φ = 673464.

The previous prime is 2020423. The next prime is 2020429. The reversal of 2020428 is 8240202.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 2020428.

It is not an unprimeable number, because it can be changed into a prime (2020423) 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 5 ways as a sum of consecutive naturals, for example, 28026 + ... + 28097.

It is an arithmetic number, because the mean of its divisors is an integer number (283738).

2^2020428 is an apocalyptic number.

It is an amenable number.

2020428 is an abundant number, since it is smaller than the sum of its proper divisors (3086856).

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

2020428 is a wasteful number, since it uses less digits than its factorization.

2020428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56133 (or 56128 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 2020428 is about 1421.4176022549. The cubic root of 2020428 is about 126.4196138713.

The spelling of 2020428 in words is "two million, twenty thousand, four hundred twenty-eight".