5400840 has 32 divisors (see below), whose sum is σ = 16202880. Its totient is φ = 1440192.

The previous prime is 5400839. The next prime is 5400847. The reversal of 5400840 is 480045.

It is not an unprimeable number, because it can be changed into a prime (5400847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22384 + ... + 22623.

It is an arithmetic number, because the mean of its divisors is an integer number (506340).

Almost surely, 2^5400840 is an apocalyptic number.

It is an amenable number.

5400840 is an abundant number, since it is smaller than the sum of its proper divisors (10802040).

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

5400840 is a wasteful number, since it uses less digits than its factorization.

5400840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45021 (or 45017 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 5400840 is about 2323.9707399191. The cubic root of 5400840 is about 175.4501607652.

Adding to 5400840 its reverse (480045), we get a palindrome (5880885).

The spelling of 5400840 in words is "five million, four hundred thousand, eight hundred forty".