2491404 has 24 divisors (see below), whose sum is σ = 5849088. Its totient is φ = 825360.

The previous prime is 2491397. The next prime is 2491453. The reversal of 2491404 is 4041942.

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, 1749 + ... + 2835.

It is an arithmetic number, because the mean of its divisors is an integer number (243712).

2^2491404 is an apocalyptic number.

It is an amenable number.

2491404 is an abundant number, since it is smaller than the sum of its proper divisors (3357684).

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

2491404 is a wasteful number, since it uses less digits than its factorization.

2491404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1285 (or 1283 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 2491404 is about 1578.4181955363. The cubic root of 2491404 is about 135.5651479770.

It can be divided in two parts, 249 and 1404, that added together give a triangular number (1653 = T₅₇).

The spelling of 2491404 in words is "two million, four hundred ninety-one thousand, four hundred four".