2506404 has 24 divisors (see below), whose sum is σ = 6156640. Its totient is φ = 791424.

The previous prime is 2506397. The next prime is 2506409. The reversal of 2506404 is 4046052.

It is a happy number.

2506404 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-2 number, since 2×2506404² = 12564122022432, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2506409) 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, 5269 + ... + 5724.

2^2506404 is an apocalyptic number.

It is an amenable number.

2506404 is an abundant number, since it is smaller than the sum of its proper divisors (3650236).

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

2506404 is a wasteful number, since it uses less digits than its factorization.

2506404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11019 (or 11017 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 2506404 is about 1583.1626574676. The cubic root of 2506404 is about 135.8366695539.

The spelling of 2506404 in words is "two million, five hundred six thousand, four hundred four".