5430640 has 20 divisors (see below), whose sum is σ = 12626424. Its totient is φ = 2172224.

The previous prime is 5430629. The next prime is 5430641. The reversal of 5430640 is 460345.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5430641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33862 + ... + 34021.

Almost surely, 2^5430640 is an apocalyptic number.

It is an amenable number.

5430640 is an abundant number, since it is smaller than the sum of its proper divisors (7195784).

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

5430640 is a wasteful number, since it uses less digits than its factorization.

5430640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67896 (or 67890 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 5430640 is about 2330.3733606442. The cubic root of 5430640 is about 175.7722605345.

Adding to 5430640 its reverse (460345), we get a palindrome (5890985).

The spelling of 5430640 in words is "five million, four hundred thirty thousand, six hundred forty".