2045420 has 24 divisors (see below), whose sum is σ = 4626384. Its totient is φ = 755136.

The previous prime is 2045377. The next prime is 2045437. The reversal of 2045420 is 245402.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3674 + ... + 4193.

It is an arithmetic number, because the mean of its divisors is an integer number (192766).

2^2045420 is an apocalyptic number.

2045420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2045420 is an abundant number, since it is smaller than the sum of its proper divisors (2580964).

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

2045420 is a wasteful number, since it uses less digits than its factorization.

2045420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7889 (or 7887 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 2045420 is about 1430.1818066246. The cubic root of 2045420 is about 126.9387349946.

The spelling of 2045420 in words is "two million, forty-five thousand, four hundred twenty".