5478440 has 32 divisors (see below), whose sum is σ = 13448160. Its totient is φ = 1992000.

The previous prime is 5478433. The next prime is 5478457. The reversal of 5478440 is 448745.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 5478397 and 5478406.

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, 5786 + ... + 6665.

It is an arithmetic number, because the mean of its divisors is an integer number (420255).

Almost surely, 2^5478440 is an apocalyptic number.

It is an amenable number.

5478440 is an abundant number, since it is smaller than the sum of its proper divisors (7969720).

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

5478440 is a wasteful number, since it uses less digits than its factorization.

5478440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12473 (or 12469 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 32.

The square root of 5478440 is about 2340.6067589409. The cubic root of 5478440 is about 176.2864653018.

The spelling of 5478440 in words is "five million, four hundred seventy-eight thousand, four hundred forty".