2026404 has 48 divisors (see below), whose sum is σ = 5443200. Its totient is φ = 651168.

The previous prime is 2026397. The next prime is 2026447. The reversal of 2026404 is 4046202.

2026404 is a `hidden beast` number, since 20 + 2 + 640 + 4 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2809 + ... + 3455.

It is an arithmetic number, because the mean of its divisors is an integer number (113400).

2^2026404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2026404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2721600).

2026404 is an abundant number, since it is smaller than the sum of its proper divisors (3416796).

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

2026404 is a wasteful number, since it uses less digits than its factorization.

2026404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 689 (or 681 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 2026404 is about 1423.5181769124. The cubic root of 2026404 is about 126.5441320395.

The spelling of 2026404 in words is "two million, twenty-six thousand, four hundred four".