5423440 has 40 divisors (see below), whose sum is σ = 13758048. Its totient is φ = 1971840.

The previous prime is 5423401. The next prime is 5423441. The reversal of 5423440 is 443245.

5423440 = T₁₅₅ + T₁₅₆ + ... + T₃₃₀.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a d-powerful number, because it can be written as 5⁵ + 4⁴ + 2⁵ + 3¹¹ + 4¹⁰ + 4¹¹ + 0 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5423441) 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, 2202 + ... + 3961.

Almost surely, 2^5423440 is an apocalyptic number.

It is an amenable number.

5423440 is an abundant number, since it is smaller than the sum of its proper divisors (8334608).

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

5423440 is a wasteful number, since it uses less digits than its factorization.

5423440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6187 (or 6181 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 5423440 is about 2328.8280314356. The cubic root of 5423440 is about 175.6945459382.

Adding to 5423440 its reverse (443245), we get a palindrome (5866685).

The spelling of 5423440 in words is "five million, four hundred twenty-three thousand, four hundred forty".