2005428 has 12 divisors (see below), whose sum is σ = 4679360. Its totient is φ = 668472.

The previous prime is 2005427. The next prime is 2005429. The reversal of 2005428 is 8245002.

It is an interprime number because it is at equal distance from previous prime (2005427) and next prime (2005429).

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2005427) 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, 83548 + ... + 83571.

2^2005428 is an apocalyptic number.

It is an amenable number.

2005428 is an abundant number, since it is smaller than the sum of its proper divisors (2673932).

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

2005428 is a wasteful number, since it uses less digits than its factorization.

2005428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167126 (or 167124 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 2005428 is about 1416.1313498401. The cubic root of 2005428 is about 126.1059828876.

The spelling of 2005428 in words is "two million, five thousand, four hundred twenty-eight".