5423640 has 32 divisors (see below), whose sum is σ = 16271280. Its totient is φ = 1446272.

The previous prime is 5423623. The next prime is 5423651. The reversal of 5423640 is 463245.

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 5423640.

It is a congruent number.

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, 22479 + ... + 22718.

Almost surely, 2^5423640 is an apocalyptic number.

It is an amenable number.

5423640 is an abundant number, since it is smaller than the sum of its proper divisors (10847640).

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

5423640 is a wasteful number, since it uses less digits than its factorization.

5423640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45211 (or 45207 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 5423640 is about 2328.8709710931. The cubic root of 5423640 is about 175.6967056055.

Adding to 5423640 its reverse (463245), we get a palindrome (5886885).

The spelling of 5423640 in words is "five million, four hundred twenty-three thousand, six hundred forty".