5421840 has 160 divisors (see below), whose sum is σ = 18748800. Its totient is φ = 1290240.

The previous prime is 5421839. The next prime is 5421887. The reversal of 5421840 is 481245.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 5421840.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 132220 + ... + 132260.

It is an arithmetic number, because the mean of its divisors is an integer number (117180).

Almost surely, 2^5421840 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5421840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9374400).

5421840 is an abundant number, since it is smaller than the sum of its proper divisors (13326960).

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

5421840 is a wasteful number, since it uses less digits than its factorization.

5421840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105 (or 99 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 5421840 is about 2328.4844856687. The cubic root of 5421840 is about 175.6772666885.

The spelling of 5421840 in words is "five million, four hundred twenty-one thousand, eight hundred forty".