5422640 has 20 divisors (see below), whose sum is σ = 12607824. Its totient is φ = 2169024.

The previous prime is 5422621. The next prime is 5422649. The reversal of 5422640 is 462245.

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

It is not an unprimeable number, because it can be changed into a prime (5422649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33812 + ... + 33971.

Almost surely, 2^5422640 is an apocalyptic number.

It is an amenable number.

5422640 is an abundant number, since it is smaller than the sum of its proper divisors (7185184).

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

5422640 is a wasteful number, since it uses less digits than its factorization.

5422640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67796 (or 67790 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 5422640 is about 2328.6562648875. The cubic root of 5422640 is about 175.6859067382.

Adding to 5422640 its reverse (462245), we get a palindrome (5884885).

The spelling of 5422640 in words is "five million, four hundred twenty-two thousand, six hundred forty".