2478404 has 12 divisors (see below), whose sum is σ = 4429824. Its totient is φ = 1212744.

The previous prime is 2478403. The next prime is 2478407. The reversal of 2478404 is 4048742.

It is a super-2 number, since 2×2478404² = 12284972774432, which contains 22 as substring.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (2478403) 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, 6404 + ... + 6779.

It is an arithmetic number, because the mean of its divisors is an integer number (369152).

2^2478404 is an apocalyptic number.

It is an amenable number.

2478404 is a deficient number, since it is larger than the sum of its proper divisors (1951420).

2478404 is a wasteful number, since it uses less digits than its factorization.

2478404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13234 (or 13232 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 29.

The square root of 2478404 is about 1574.2947627430. The cubic root of 2478404 is about 135.3289463393.

It can be divided in two parts, 2478 and 404, that added together give a palindrome (2882).

The spelling of 2478404 in words is "two million, four hundred seventy-eight thousand, four hundred four".