5402240 has 64 divisors (see below), whose sum is σ = 13512960. Its totient is φ = 2061312.

The previous prime is 5402239. The next prime is 5402297. The reversal of 5402240 is 422045.

It is a tau number, because it is divible by the number of its divisors (64).

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, 14537 + ... + 14903.

It is an arithmetic number, because the mean of its divisors is an integer number (211140).

Almost surely, 2^5402240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5402240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6756480).

5402240 is an abundant number, since it is smaller than the sum of its proper divisors (8110720).

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

5402240 is a wasteful number, since it uses less digits than its factorization.

5402240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409 (or 397 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 5402240 is about 2324.2719290135. The cubic root of 5402240 is about 175.4653194568.

Adding to 5402240 its reverse (422045), we get a palindrome (5824285).

The spelling of 5402240 in words is "five million, four hundred two thousand, two hundred forty".