5428240 has 20 divisors (see below), whose sum is σ = 12620844. Its totient is φ = 2171264.

The previous prime is 5428237. The next prime is 5428261. The reversal of 5428240 is 428245.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3154176 + 2274064 = 1776^2 + 1508^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33847 + ... + 34006.

Almost surely, 2^5428240 is an apocalyptic number.

It is an amenable number.

5428240 is an abundant number, since it is smaller than the sum of its proper divisors (7192604).

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

5428240 is a wasteful number, since it uses less digits than its factorization.

5428240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67866 (or 67860 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 5428240 is about 2329.8583647939. The cubic root of 5428240 is about 175.7463633054.

The spelling of 5428240 in words is "five million, four hundred twenty-eight thousand, two hundred forty".